WIP

AGENTS.md

@@ -0,0 +1,102 @@
+## CODE GENERATION INSTRUCTIONS
+
+You are tasked with integrating patches into my kernel to make the tearing protocol work on Wayland with my intel B580. 
+
+## THINGS TO DO:
+
+Plan out how you're going to do the following. I will inspect your plan and then authorize it.
+
+- Custom build this MR: https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3797
+
+- Fix KDE tearing on Intel Graphics using kernel patches for libdrm. Use these resources to research:
+    - https://bugs.kde.org/show_bug.cgi?id=520549
+    - https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/8597#note_3567675
+    - https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/13834 (this one has patches that supposedly fix the problem.)
+
+
+# Plan here:
+
+- [ ] 1. Record the current package and kernel baselines.
+  - Evaluate the locked versions of Mutter, GNOME Shell, libdrm, and the selected CachyOS kernel.
+  - Confirm that the Intel Arc B580 (`8086:e20b`) is using the `xe` driver.
+  - Save the current working kernel and NixOS generation as the rollback baseline.
+
+- [ ] 2. Pin all experimental upstream sources.
+  - Pin Mutter merge request !3797 to a specific commit instead of following its branch.
+  - Record the MR base commit and verify whether it is compatible with the Mutter version in the locked nixpkgs input.
+  - Identify the exact revisions of the Intel async-flip and `IN_FORMATS_ASYNC` kernel patches referenced by the i915 and Xe work items.
+  - Use fixed-output hashes for every fetched patch or source archive.
+
+- [ ] 3. Determine which Intel DRM patches are still required.
+  - Inspect the selected CachyOS kernel source for patches that have already been merged or backported.
+  - Select only the missing patches needed to expose async-capable formats and prevent unchanged or disabled planes from incorrectly rejecting an async atomic commit.
+  - Confirm that the selected changes affect the Intel display code shared by `xe` and `i915`, and therefore apply to the B580 even when the original report is filed under i915.
+  - Document the required patch order and each patch's upstream URL and revision.
+
+- [ ] 4. Add a dedicated, reversible Wayland-tearing overlay or module.
+  - Keep the experimental Mutter and kernel overrides together in a new, clearly named repository file.
+  - Scope the override to `drivebystation-nix` where practical.
+  - Provide a single enable switch or isolated import so the experiment can be disabled without editing generated hardware configuration.
+  - Preserve all unrelated existing worktree changes.
+
+- [ ] 5. Override Mutter with merge request !3797.
+  - Prefer applying the pinned MR commits to the nixpkgs Mutter derivation so nixpkgs build flags and dependency wiring are retained.
+  - If the patch series is incompatible, use the pinned MR source only after confirming its Mutter ABI matches the installed GNOME Shell.
+  - Verify that libdrm is at least version 2.4.120.
+  - Ensure GNOME Shell and the display-manager session reference the overridden Mutter rather than merely installing it alongside the stock package.
+  - Enable the experimental feature with `MUTTER_DEBUG_EXPERIMENTAL_FEATURES=tearing` in the session environment.
+
+- [ ] 6. Override the CachyOS kernel with the selected Intel DRM patches.
+  - Extend the existing `pkgs.cachyosKernels.linuxPackages-cachyos-latest` kernel derivation rather than replacing it with an unrelated kernel package set.
+  - Apply the pinned patches in their upstream dependency order.
+  - Verify that every patch applies cleanly to the exact CachyOS kernel source.
+  - Keep `boot.extraModulePackages` tied to the patched kernel package set so `r8125` and `v4l2loopback` are rebuilt against the correct kernel.
+  - Do not modify the generated `hardware-configuration.nix` beyond any unavoidable existing kernel selection; place the override in a maintained host module.
+
+- [ ] 7. Validate the Nix expressions without activating the system.
+  - Run formatting and syntax checks on every changed Nix file.
+  - Evaluate the complete `drivebystation-nix` configuration.
+  - Run `nix flake check` and resolve evaluation failures attributable to these changes.
+  - Confirm that all sources are pinned and reproducible and that no mutable branch names remain.
+
+- [ ] 8. Build each risky component independently.
+  - Build the overridden Mutter derivation.
+  - Build the patched kernel derivation.
+  - Build the matching `r8125` and `v4l2loopback` modules.
+  - Inspect the build logs for rejected patches, warnings related to async flips, and ABI mismatches.
+
+- [ ] 9. Build the complete NixOS system before switching.
+  - Build the `drivebystation-nix` toplevel without activating it.
+  - Verify that the closure contains the pinned patched Mutter and patched CachyOS kernel.
+  - Confirm that a previous known-good boot generation remains available.
+
+- [ ] 10. Activate the result safely.
+  - Use `nixos-rebuild boot` first so the new system is selected only after reboot.
+  - Reboot into the patched generation and verify the running kernel version and `xe` driver binding.
+  - If the display fails or the system is unstable, boot the previous generation and disable the experimental module.
+
+- [ ] 11. Verify the kernel DRM capabilities.
+  - Run `drm_info` and confirm atomic async-page-flip capability is reported.
+  - Confirm `IN_FORMATS_ASYNC` is populated for supported primary planes.
+  - Confirm its absence on the cursor plane is handled as expected rather than causing the entire commit to fail.
+  - Capture a DRM debug log while submitting tearing-enabled fullscreen frames.
+
+- [ ] 12. Test KDE Plasma tearing.
+  - Enable Plasma's "Allow in fullscreen windows" tearing setting.
+  - Run a fullscreen tearing-aware game or test client with frame rate above the monitor refresh rate.
+  - Confirm that KWin's async atomic commits no longer fail with `-EINVAL`.
+  - Confirm that the previous `cursor A: async flip not supported` and `plane 2A: async flip not supported` errors no longer occur for disabled or unchanged planes.
+  - Check cursor movement, fullscreen entry and exit, direct scanout, VRR enabled and disabled, and all connected monitors.
+
+- [ ] 13. Test GNOME Mutter tearing.
+  - Start a GNOME Wayland session and confirm the tearing-control protocol is advertised.
+  - Run `weston-simple-egl -v -f -t` or an equivalent tearing-aware client.
+  - Confirm that requested asynchronous flips are accepted and visibly tear when the frame rate exceeds the refresh rate.
+  - Confirm unsupported async commits fall back to synchronized presentation without breaking the session.
+  - Test cursor movement, fullscreen transitions, VRR, multiple monitors, and suspend/resume.
+
+- [ ] 14. Document results and removal criteria.
+  - Record the tested hardware, kernel, Mutter, GNOME Shell, Plasma, and libdrm versions.
+  - Record the exact patches used and the outcome of both compositor tests.
+  - Document how to disable the overrides and roll back to the previous generation.
+  - Note which upstream merge or kernel release will allow each local override to be removed.

flake.lock

@@ -9,11 +9,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1779903856,
+        "lastModified": 1787517695,
-        "narHash": "sha256-uRShMtD6xW3ZKZbCQ6sDzKWEnbBXUg3IGfOARYogKhg=",
+        "narHash": "sha256-Z119G3qLJx22frNHO3/seMs7fCCvxe9NJJRfN4Jadew=",
         "owner": "ezKEa",
         "repo": "aagl-gtk-on-nix",
-        "rev": "50671fc7f29d686f63ef34b603320d44ad7f2d29",
+        "rev": "4bb57072d963aa47f14894383a5560cf290e296a",
         "type": "github"
       },
       "original": {
@@ -22,66 +22,13 @@
         "type": "github"
       }
     },
-    "anikki": {
-      "inputs": {
-        "flake-utils": "flake-utils",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1766470910,
-        "narHash": "sha256-iY0vJAAjY5ZveB6JIAQDHq7lFrkAVGnO0tC7YOYDFsg=",
-        "owner": "Hion-V",
-        "repo": "Anikki-flake",
-        "rev": "95d15448466142126c7fc13ac1dbdaf58a36a3a5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "Hion-V",
-        "repo": "Anikki-flake",
-        "type": "github"
-      }
-    },
-    "cachyos-kernel": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1779781360,
-        "narHash": "sha256-02SR7VL4wc57NCVMhyVgz6/SVfyGv7mc4h+SmgR2I8g=",
-        "owner": "CachyOS",
-        "repo": "linux-cachyos",
-        "rev": "c7cb822e8ee91d993052becf2661b6f26f98eaa2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "CachyOS",
-        "repo": "linux-cachyos",
-        "type": "github"
-      }
-    },
-    "cachyos-kernel-patches": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1779618819,
-        "narHash": "sha256-/cGZZCyJZS1QATHi+/2Q32NkjrYN2N2PpgFP8Ak4FJc=",
-        "owner": "CachyOS",
-        "repo": "kernel-patches",
-        "rev": "668b466fb461409329425b50c4a9d8d2c022a739",
-        "type": "github"
-      },
-      "original": {
-        "owner": "CachyOS",
-        "repo": "kernel-patches",
-        "type": "github"
-      }
-    },
     "crane": {
       "locked": {
-        "lastModified": 1754269165,
+        "lastModified": 1781825982,
-        "narHash": "sha256-0tcS8FHd4QjbCVoxN9jI+PjHgA4vc/IjkUSp+N3zy0U=",
+        "narHash": "sha256-SlXKwIRIhrOSAcTjCB3ftPLzJWZStQIPS7J1FlZPnKk=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "444e81206df3f7d92780680e45858e31d2f07a08",
+        "rev": "469fd08d0bcf6926321fa973c6777fbc87785dd7",
         "type": "github"
       },
       "original": {
@@ -109,15 +56,15 @@
     "flake-compat_2": {
       "flake": false,
       "locked": {
-        "lastModified": 1747046372,
+        "lastModified": 1767039857,
-        "narHash": "sha256-CIVLLkVgvHYbgI2UpXvIIBJ12HWgX+fjA8Xf8PUmqCY=",
+        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
-        "owner": "edolstra",
+        "owner": "NixOS",
         "repo": "flake-compat",
-        "rev": "9100a0f413b0c601e0533d1d94ffd501ce2e7885",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
         "type": "github"
       },
       "original": {
-        "owner": "edolstra",
+        "owner": "NixOS",
         "repo": "flake-compat",
         "type": "github"
       }
@@ -139,22 +86,6 @@
       }
     },
     "flake-compat_4": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1767039857,
-        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-compat_5": {
       "flake": false,
       "locked": {
         "lastModified": 1650374568,
@@ -171,36 +102,15 @@
       }
     },
     "flake-parts": {
-      "inputs": {
-        "nixpkgs-lib": [
-          "lanzaboote",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1754091436,
-        "narHash": "sha256-XKqDMN1/Qj1DKivQvscI4vmHfDfvYR2pfuFOJiCeewM=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "67df8c627c2c39c41dbec76a1f201929929ab0bd",
-        "type": "github"
-      },
-      "original": {
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "type": "github"
-      }
-    },
-    "flake-parts_2": {
       "inputs": {
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1778716662,
+        "lastModified": 1788306937,
-        "narHash": "sha256-m1Yf0wZ8j1OHjTc2UwHwyQRSnNeSgLJOd7q5Y45hzi4=",
+        "narHash": "sha256-lbrI1UYVpFgKSsyrU9oeF7FHfnu8nLD9ja0ou9f2rxk=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "f7c1a2d347e4c52d5fb8d10cb4d94b5884e546fb",
+        "rev": "f16b25b8c3d2809b87925d0b76652d7821a75c68",
         "type": "github"
       },
       "original": {
@@ -214,11 +124,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
+        "lastModified": 1694529238,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
         "type": "github"
       },
       "original": {
@@ -229,7 +139,7 @@
     },
     "flake-utils-plus": {
       "inputs": {
-        "flake-utils": "flake-utils_2"
+        "flake-utils": "flake-utils"
       },
       "locked": {
         "lastModified": 1715533576,
@@ -246,49 +156,11 @@
         "type": "github"
       }
     },
-    "flake-utils_2": {
-      "inputs": {
-        "systems": "systems_2"
-      },
-      "locked": {
-        "lastModified": 1694529238,
-        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "game-of-life": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1771895942,
-        "narHash": "sha256-2G212O6uoBCjmyIBux/Kfy/FVlsAY+3mTT4JRstYRZ0=",
-        "owner": "local-interloper",
-        "repo": "game-of-life",
-        "rev": "dd5cba5d873ece0ca5c8a7d74243b3b0199a2194",
-        "type": "github"
-      },
-      "original": {
-        "owner": "local-interloper",
-        "repo": "game-of-life",
-        "type": "github"
-      }
-    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
           "lanzaboote",
-          "pre-commit-hooks-nix",
+          "pre-commit",
           "nixpkgs"
         ]
       },
@@ -313,11 +185,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1779969295,
+        "lastModified": 1788355065,
-        "narHash": "sha256-HwIJ3tOcwSMiV75L7KqJXciXR9UfT+d7rwOZMX7cTnA=",
+        "narHash": "sha256-gAz5oTI7ur34CfuakQduiQd/2ZhO62Bn2XXg08nZYYQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "61e2c9659324181e0f0ed911958c536333b1d4f6",
+        "rev": "d9d750e4fc11c10cab2da677bdd31e427f3a3a71",
         "type": "github"
       },
       "original": {
@@ -334,11 +206,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1778805320,
+        "lastModified": 1788229478,
-        "narHash": "sha256-nGFJ01m2CTBKD4ABtcY4vLhHrRN91LKr/pn41PcU78A=",
+        "narHash": "sha256-G0F2rFORVcFkEvVdE/qWQTnYekIc77YP5/vRF9nZlxU=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "9846abe15e7d0d36b8acbd4d05f2b87461744c92",
+        "rev": "1dc2d1f720ab17fc7981e087346bf54b26d284b1",
         "type": "github"
       },
       "original": {
@@ -350,43 +222,39 @@
     "lanzaboote": {
       "inputs": {
         "crane": "crane",
-        "flake-compat": "flake-compat_2",
-        "flake-parts": "flake-parts",
         "nixpkgs": [
           "nixpkgs"
         ],
-        "pre-commit-hooks-nix": "pre-commit-hooks-nix",
+        "pre-commit": "pre-commit",
         "rust-overlay": "rust-overlay_2"
       },
       "locked": {
-        "lastModified": 1762205063,
+        "lastModified": 1782141370,
-        "narHash": "sha256-If6vQ+KvtKs3ARBO9G3l+4wFSCYtRBrwX1z+I+B61wQ=",
+        "narHash": "sha256-hqijVSEETttmo8Okql9/LG0Ua34hdciKW1a5zzlj8mU=",
         "owner": "nix-community",
         "repo": "lanzaboote",
-        "rev": "88b8a563ff5704f4e8d8e5118fb911fa2110ca05",
+        "rev": "7c9a54a7f87b4539ddbd8bda09a8a5f5f9361aa9",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
-        "ref": "v0.4.3",
+        "ref": "v1.1.0",
         "repo": "lanzaboote",
         "type": "github"
       }
     },
     "nix-cachyos-kernel": {
       "inputs": {
-        "cachyos-kernel": "cachyos-kernel",
-        "cachyos-kernel-patches": "cachyos-kernel-patches",
         "flake-compat": "flake-compat_3",
-        "flake-parts": "flake-parts_2",
+        "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1779910731,
+        "lastModified": 1788379544,
-        "narHash": "sha256-BSu/X9EyAyAPOjXsuwED4j4IeduP/5KVjTwiQSLkdik=",
+        "narHash": "sha256-EMfRomvn1lAErvY/Q3bQL+PwEi+5hbBwI0ZI5SRC/WM=",
         "owner": "xddxdd",
         "repo": "nix-cachyos-kernel",
-        "rev": "a2cdbecf6abb1a1180bf9fe5c3028125416621f1",
+        "rev": "d1c3cadc796061778cf7f62bdbfaf68cf3c3c654",
         "type": "github"
       },
       "original": {
@@ -396,35 +264,13 @@
         "type": "github"
       }
     },
-    "nixos-wsl": {
-      "inputs": {
-        "flake-compat": "flake-compat_4",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1777732699,
-        "narHash": "sha256-2uX/XtOWZ/oy2rerRynVhqVA//ZXZ3Fo60PikLHEPQc=",
-        "owner": "nix-community",
-        "repo": "NixOS-WSL",
-        "rev": "5482f113fd31ebac131d1ebeb2ae90bf0d5e41f5",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "ref": "main",
-        "repo": "NixOS-WSL",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1779894193,
+        "lastModified": 1788329703,
-        "narHash": "sha256-2PixoQSj9hdtoXTu0ZxdI0cmAE6GUUjCODG+rtC1wDc=",
+        "narHash": "sha256-fHvRW4JUchuw6QNzQ50BfzeYe0TnjKml1V8PVRjntSI=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a09ffe51cfdc37950f14286593605ce64f76cc93",
+        "rev": "090e478bd64824e2122328df47a7efb74fdaf0c1",
         "type": "github"
       },
       "original": {
@@ -436,11 +282,11 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "lastModified": 1777168982,
+        "lastModified": 1788057806,
-        "narHash": "sha256-GOkGPcboWE9BmGCRMLX3worL4EMnsnG8MyKmXNeYuhQ=",
+        "narHash": "sha256-DTQSMxzDWmT0zhguthvegnVkn7CFqGCv4IHCzk5ZUpM=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "f5901329dade4a6ea039af1433fb087bd9c1fe14",
+        "rev": "596e2e3940e09b2abbeb03f75fa1828c57fcd72c",
         "type": "github"
       },
       "original": {
@@ -451,11 +297,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1779560665,
+        "lastModified": 1788179007,
-        "narHash": "sha256-tpyBcxPpcQb8ukyNF7DoCwfSY3VPsxHoYwj00Cayv5o=",
+        "narHash": "sha256-hn1oU2rue2SYK8dAr8+WNZWtbsz1S2W5mnHlSEuh3bo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "64c08a7ca051951c8eae34e3e3cb1e202fe36786",
+        "rev": "34ab99075ac4f7e40cf037eef32cb1c360bb85e9",
         "type": "github"
       },
       "original": {
@@ -465,12 +311,9 @@
         "type": "github"
       }
     },
-    "pre-commit-hooks-nix": {
+    "pre-commit": {
       "inputs": {
-        "flake-compat": [
+        "flake-compat": "flake-compat_2",
-          "lanzaboote",
-          "flake-compat"
-        ],
         "gitignore": "gitignore",
         "nixpkgs": [
           "lanzaboote",
@@ -478,11 +321,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1750779888,
+        "lastModified": 1781733627,
-        "narHash": "sha256-wibppH3g/E2lxU43ZQHC5yA/7kIKLGxVEnsnVK1BtRg=",
+        "narHash": "sha256-U3yTuGBnmXvXoQI3qkpfEDsn9RovQPAjN7ndRco+3u0=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "16ec914f6fb6f599ce988427d9d94efddf25fe6d",
+        "rev": "3bbec39bc90eadfa031e6f3b77272f3f60803e39",
         "type": "github"
       },
       "original": {
@@ -494,12 +337,9 @@
     "root": {
       "inputs": {
         "aagl": "aagl",
-        "anikki": "anikki",
-        "game-of-life": "game-of-life",
         "home-manager": "home-manager",
         "lanzaboote": "lanzaboote",
         "nix-cachyos-kernel": "nix-cachyos-kernel",
-        "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs_2",
         "snowfall-lib": "snowfall-lib",
         "sops-nix": "sops-nix",
@@ -514,11 +354,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1777605393,
+        "lastModified": 1785476452,
-        "narHash": "sha256-Hjp0VOOHgHcTrX23iVvnfAudPcuCmfkfpQNFwv2v/ks=",
+        "narHash": "sha256-/CXwCFPS41rb/JI2VitKCgVK6V5E6/sfw5ke3B9zyVQ=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "ff88db34cfa486fc4964a6991cab1678d82eee8c",
+        "rev": "6ef009bf4c4873cdc1a621826722bdea7c03e62c",
         "type": "github"
       },
       "original": {
@@ -535,11 +375,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1761791894,
+        "lastModified": 1782012058,
-        "narHash": "sha256-myRIDh+PxaREz+z9LzbqBJF+SnTFJwkthKDX9zMyddY=",
+        "narHash": "sha256-9mWUnReOUXfKjZuJAL/bAFH3LUyECTRtXgSNVjRw3UY=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "59c45eb69d9222a4362673141e00ff77842cd219",
+        "rev": "8534567325bd8a8d2928e6afd81e0a87d19efd3c",
         "type": "github"
       },
       "original": {
@@ -550,18 +390,18 @@
     },
     "snowfall-lib": {
       "inputs": {
-        "flake-compat": "flake-compat_5",
+        "flake-compat": "flake-compat_4",
         "flake-utils-plus": "flake-utils-plus",
         "nixpkgs": [
           "nixpkgs"
         ]
       },
       "locked": {
-        "lastModified": 1765361626,
+        "lastModified": 1784328457,
-        "narHash": "sha256-kX0Dp/kYSRbQ+yd9e3lmmUWdNbipufvKfL2IzbrSpnY=",
+        "narHash": "sha256-4R5WV74NHhPk21ctoPmjL7nQ6txDnoBLwSWULvIw0TY=",
         "owner": "snowfallorg",
         "repo": "lib",
-        "rev": "c566ad8b7352c30ec3763435de7c8f1c46ebb357",
+        "rev": "6ee3542cb459ca4b038cfe50ceb8797f05cdabad",
         "type": "github"
       },
       "original": {
@@ -577,11 +417,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1777944972,
+        "lastModified": 1788337237,
-        "narHash": "sha256-VfGRo1qTBKOe3s2gOv8LSoA6Fk19PvBlwQ1ECN0Evn8=",
+        "narHash": "sha256-gkSH8VUtCo6hnysNmb9DbTuDepH2t5pv+QWjP75xKAk=",
         "owner": "mic92",
         "repo": "sops-nix",
-        "rev": "c591bf665727040c6cc5cb409079acb22dcce33c",
+        "rev": "fbf759290e0cb0a98dfc813a4eb7d53ad1dacb57",
         "type": "github"
       },
       "original": {
@@ -605,21 +445,6 @@
         "type": "github"
       }
     },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
     "zen-browser": {
       "inputs": {
         "home-manager": "home-manager_2",
@@ -628,11 +453,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1779955179,
+        "lastModified": 1788405419,
-        "narHash": "sha256-cHrbJ8pZrsFWUTJVk7AxWiEg5eiZptPQxtT0YXMIENo=",
+        "narHash": "sha256-wuGizAVEmY0u15MYrhgy7AoQdHg+4Y2QiC+v/mxA8dc=",
         "owner": "0xc000022070",
         "repo": "zen-browser-flake",
-        "rev": "c341e3f6516fb1286d25b99d34b111f93028ae87",
+        "rev": "fdb83f8fce835213fab7eab52c375926fe1a32dc",
         "type": "github"
       },
       "original": {

flake.nix

@@ -4,19 +4,19 @@
   inputs = {
     # nixpkgs.url = "github:nixos/nixpkgs/nixos-24.05";
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; # Use nixos-unstable for latest kernel and packages
-    nixos-wsl = {
+    # nixos-wsl = {
-      url = "github:nix-community/NixOS-WSL/main";
+    #   url = "github:nix-community/NixOS-WSL/main";
-      inputs.nixpkgs.follows = "nixpkgs";
+    #   inputs.nixpkgs.follows = "nixpkgs";
-    };
+    # };
     # Snowfallorg's Flake utility
     snowfall-lib = {
       url = "github:snowfallorg/lib";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    game-of-life = {
+    # game-of-life = {
-      url = "github:local-interloper/game-of-life";
+    #   url = "github:local-interloper/game-of-life";
-      inputs.nixpkgs.follows = "nixpkgs";
+    #   inputs.nixpkgs.follows = "nixpkgs";
-    };
+    # };
     # Add sops-nix for secrets management
     sops-nix = {
       url = "github:mic92/sops-nix";
@@ -30,12 +30,12 @@
       url = "github:nix-community/home-manager";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    anikki = {
+    # anikki = {
-      url = "github:Hion-V/Anikki-flake";
+    #   url = "github:Hion-V/Anikki-flake";
-      inputs.nixpkgs.follows = "nixpkgs";
+    #   inputs.nixpkgs.follows = "nixpkgs";
-    };
+    # };
     lanzaboote = {
-      url = "github:nix-community/lanzaboote/v0.4.3";
+      url = "github:nix-community/lanzaboote/v1.1.0";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     # kwin-effects-forceblur = { Archived.

modules/nixos/desktop-environment/default.nix

@@ -5,6 +5,9 @@ let
 in {
 
   options.${namespace}.desktop-environment = {
+    cinnamon = {
+      enable = lib.mkEnableOption "Cinnamon desktop environment";
+    };
     xfce = {
       enable = lib.mkEnableOption "XFCE desktop environment";
     };
@@ -23,6 +26,16 @@ in {
   };
 
   config = lib.mkMerge [
+    (lib.mkIf cfg.xfce.enable {
+      services.xserver = {
+        enable = true;
+        desktopManager = {
+          cinnamon.enable = true;
+        };
+      };
+      environment.sessionVariables.NIX_GSETTINGS_OVERRIDES_DIR = 
+        lib.mkForce "${pkgs.gnome.nixos-gsettings-overrides}/share/gsettings-schemas/nixos-gsettings-overrides/glib-2.0/schemas";
+    })
     (lib.mkIf cfg.xfce.enable {
       services.xserver = {
         enable = true;

modules/nixos/steam/default.nix

@@ -31,6 +31,7 @@
     environment.systemPackages = with pkgs; [
       protonup-ng  # Tool to install and manage Proton-GE
       lutris
+      faugus-launcher
       vkd3d
       dxvk
       protontricks

overlays/mesa-gcc/default.nix

@@ -1,38 +0,0 @@
-{ ... }:
-
-final: prev: {
-  mesa = (prev.mesa.overrideAttrs (old: rec {
-    version = "git-unstable-2026-05-07";
-    src = prev.fetchFromGitLab {
-      domain = "gitlab.freedesktop.org";
-      owner = "mesa";
-      repo = "mesa";
-      rev = "0f75fa5bfd29770128a412f1fcf5c4121f95e1bb";
-      hash = "sha256-9sqgro3Y+yctcueHEO0hNmySLNn9F1HP3lPqcIow0+k=";
-    };
-    patches = [];
-    buildInputs = old.buildInputs ++ (with prev.llvmPackages_21; [ 
-      clang-unwrapped
-      libclang
-    ]);
-    
-    # Create symlinks to clang libraries so meson can find them
-    preConfigure = (old.preConfigure or "") + ''
-      mkdir -p $NIX_BUILD_TOP/clang-libs
-      for lib in ${prev.llvmPackages_21.clang-unwrapped.lib}/lib/*.a; do
-        ln -sf "$lib" "$NIX_BUILD_TOP/clang-libs/"
-      done
-      export LIBRARY_PATH="$NIX_BUILD_TOP/clang-libs:''${LIBRARY_PATH:-}"
-      export CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
-    '';
-    
-    mesonFlags = 
-      (builtins.filter (flag: 
-        !(prev.lib.hasPrefix "-Dclang-libdir=" flag) &&
-        flag != "--sysconfdir=/etc"
-      ) old.mesonFlags) ++ [
-      "-Dsysconfdir=${placeholder "out"}/etc"
-    ] ++ (if prev.stdenv.hostPlatform.is64bit then [ "-Dintel-rt=enabled" ] else [ "-Dintel-rt=disabled" ]);
-  }));
-}
-

overlays/vscode-modernized/default.nix

@@ -0,0 +1,100 @@
+# overlays/vscode-modernized/default.nix
+{ ... }:
+
+final: prev:
+
+let
+  modernized = prev.fetchFromGitHub {
+    owner = "Sukarth";
+    repo = "VS-Code-Modernized";
+    # Pin this once working.
+    rev = "main";
+    hash = "sha256-QSmdmCoF2L42ZUxYpJXq6REOdNObK9DBI6c0GEQ32rQ=";
+  };
+
+  injectModernized = vscodePkg:
+    vscodePkg.overrideAttrs (old: {
+      postInstall = (old.postInstall or "") + ''
+        (
+          set -euo pipefail
+
+          candidates=(
+            "$out/lib/vscode/resources/app/out/vs/code/electron-sandbox/workbench/workbench.html"
+            "$out/lib/vscode/resources/app/out/vs/code/electron-sandbox/workbench/workbench.esm.html"
+            "$out/lib/vscode/resources/app/out/vs/code/electron-browser/workbench/workbench.html"
+            "$out/lib/vscode/resources/app/out/vs/code/electron-browser/workbench/workbench.esm.html"
+          )
+
+          workbench=""
+          for candidate in "''${candidates[@]}"; do
+            if [ -f "$candidate" ]; then
+              workbench="$candidate"
+              break
+            fi
+          done
+
+          if [ -z "$workbench" ]; then
+            echo "VS Code Modernized: could not find workbench.html" >&2
+            find "$out/lib/vscode/resources/app/out/vs" -name 'workbench*.html' -print >&2 || true
+            exit 1
+          fi
+
+          # Build one self-contained CSS file.
+          cat > /tmp/vscode-modernized-inline.css <<'EOF'
+/* VS Code Modernized dynamic settings */
+:root {
+  --vscode-modernized-spacing: 0.35rem;
+  --vscode-modernized-border-radius: 0.5rem;
+  --vscode-modernized-tab-spacing: 0.2rem;
+}
+EOF
+
+          cat "${modernized}/styles/styles.css" >> /tmp/vscode-modernized-inline.css
+
+          # Smoke-test styles. Remove later if you want.
+          cat >> /tmp/vscode-modernized-inline.css <<'EOF'
+
+/* Nix smoke test: these should be very visible */
+.monaco-workbench .part.sidebar,
+.monaco-workbench .part.auxiliarybar,
+.monaco-workbench .part.panel,
+.monaco-workbench .editor-group-container,
+.monaco-workbench .tabs-container,
+.monaco-workbench .tab,
+.monaco-workbench .monaco-list-row,
+.monaco-workbench .quick-input-widget {
+  border-radius: var(--vscode-modernized-border-radius) !important;
+  overflow: hidden !important;
+}
+
+.monaco-workbench .part.sidebar,
+.monaco-workbench .part.panel,
+.monaco-workbench .editor-group-container {
+  margin: var(--vscode-modernized-spacing) !important;
+}
+EOF
+
+          css="$(sed \
+            -e 's/&/\&amp;/g' \
+            -e 's/</\&lt;/g' \
+            -e 's/>/\&gt;/g' \
+            /tmp/vscode-modernized-inline.css)"
+
+          inject="
+<!-- VS Code Modernized - Nix injected -->
+<style id=\"vscode-modernized-nix\">
+$css
+</style>
+<!-- /VS Code Modernized - Nix injected -->
+"
+
+          substituteInPlace "$workbench" \
+            --replace-fail '</html>' "$inject
+</html>"
+        )
+      '';
+    });
+in
+{
+  vscode-modernized = injectModernized prev.vscode;
+}

packages/cs-demo-manager/default.nix

@@ -16,7 +16,7 @@ let
     hash = "sha256-REEhqvfYSKD7EyIYJVlbkQu0h5FZcofc8X7Zhu1xZnA="; # You need to add the hash after first build attempt
   };
 
-  appimageContents = appimageTools.extractType2 {
+  appimageContents = appimageTools.extract {
     inherit pname version src;
   };
 in

packages/hello/default.nix

@@ -1,69 +0,0 @@
-{
-    # Snowfall Lib provides a customized `lib` instance with access to your flake's library
-    # as well as the libraries available from your flake's inputs.
-    lib,
-    # You also have access to your flake's inputs.
-    inputs,
-
-    # The namespace used for your flake, defaulting to "internal" if not set.
-    namespace,
-
-    # All other arguments come from NixPkgs. You can use `pkgs` to pull packages or helpers
-    # programmatically or you may add the named attributes as arguments here.
-    stdenv,
-    fetchurl,
-    nixos,
-    callPackage,
-    testers,
-    versionCheckHook,
-    hello,
-    ...
-}:
-stdenv.mkDerivation (finalAttrs: {
-  pname = "hello";
-  version = "2.12.1";
-
-  src = fetchurl {
-    url = "mirror://gnu/hello/hello-${finalAttrs.version}.tar.gz";
-    hash = "sha256-jZkUKv2SV28wsM18tCqNxoCZmLxdYH2Idh9RLibH2yA=";
-  };
-
-  # The GNU Hello `configure` script detects how to link libiconv but fails to actually make use of that.
-  # Unfortunately, this cannot be a patch to `Makefile.am` because `autoreconfHook` causes a gettext
-  # infrastructure mismatch error when trying to build `hello`.
-  env = lib.optionalAttrs stdenv.hostPlatform.isDarwin {
-    NIX_LDFLAGS = "-liconv";
-  };
-
-  doCheck = true;
-
-  doInstallCheck = true;
-  nativeInstallCheckInputs = [
-    versionCheckHook
-  ];
-
-  # Give hello some install checks for testing purpose.
-  postInstallCheck = ''
-    stat "''${!outputBin}/bin/${finalAttrs.meta.mainProgram}"
-  '';
-
-  passthru.tests = {
-    version = testers.testVersion { package = hello; };
-  };
-
-  passthru.tests.run = callPackage ./test.nix { hello = finalAttrs.finalPackage; };
-
-  meta = {
-    description = "Program that produces a familiar, friendly greeting";
-    longDescription = ''
-      GNU Hello is a program that prints "Hello, world!" when you run it.
-      It is fully customizable.
-    '';
-    homepage = "https://www.gnu.org/software/hello/manual/";
-    changelog = "https://git.savannah.gnu.org/cgit/hello.git/plain/NEWS?h=v${finalAttrs.version}";
-    license = lib.licenses.gpl3Plus;
-    maintainers = with lib.maintainers; [ stv0g ];
-    mainProgram = "hello";
-    platforms = lib.platforms.all;
-  };
-})

packages/hello/test.nix

@@ -1,8 +0,0 @@
-{ runCommand, hello }:
-
-runCommand "hello-test-run" {
-  nativeBuildInputs = [ hello ];
-} ''
-  diff -U3 --color=auto <(hello) <(echo 'Hello, world!')
-  touch $out
-''

packages/rounded-blur/default.nix

@@ -0,0 +1,89 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  meson,
+  ninja,
+  pkg-config,
+  gobject-introspection,
+  glib,
+  gnome,
+  mutter,
+  cairo,
+  gsettings-desktop-schemas,
+  wayland,
+  libglvnd,
+  libxfixes,
+  libxi,
+  atk,
+  libxkbcommon,
+  clutter,
+  cmake,
+  gnome-shell,
+  lcms2,
+}:
+
+stdenv.mkDerivation {
+  pname = "gnome-rounded-blur";
+  version = "unstable-2026-06-11";
+
+  src = fetchFromGitHub {
+    owner = "kancko";
+    repo = "gnome-rounded-blur";
+    # Replace this with a fixed commit.
+    rev = "master";
+    # Run once with lib.fakeHash, then replace with the real hash.
+    hash = "sha256-MBeb0/Drt0UQ/K8UaW93ae9OaV3L5nhFZB2tPwj47co=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    gobject-introspection
+    cmake
+  ];
+
+  buildInputs = [
+    glib
+    mutter
+    cairo
+    gsettings-desktop-schemas
+    wayland
+    libglvnd
+    libxfixes
+    libxi
+    atk
+    libxkbcommon
+    clutter
+    (lib.getDev mutter)
+    (lib.getLib mutter)
+    (lib.getDev gnome-shell)
+    (lib.getLib gnome-shell)
+    lcms2 # required by mutter-clutter
+  ];
+  postFixup = ''
+    for libfile in $out/lib/libblur-effect-1.0.so*; do
+      if [ -f "$libfile" ] && [ ! -L "$libfile" ]; then
+        patchelf --set-rpath "${
+          lib.makeLibraryPath [
+            glib
+            wayland
+            (lib.getLib mutter)
+          ]
+        }:$out/lib" "$libfile"
+      fi
+    done
+  '';
+  # The upstream meson file installs:
+  # - libblur-effect-1.0.so*
+  # - Blur-1.0.gir
+  # - Blur-1.0.typelib
+  # See src/meson.build.
+  meta = {
+    description = "Rounded blur GObject library for GNOME Shell extensions";
+    homepage = "https://github.com/kancko/gnome-rounded-blur";
+    license = lib.licenses.gpl3Plus;
+    platforms = lib.platforms.linux;
+  };
+}

packages/rounded-windows-bms/default.nix

@@ -0,0 +1,53 @@
+{
+  lib,
+  stdenvNoCC,
+  fetchFromGitHub,
+  glib,
+}:
+
+stdenvNoCC.mkDerivation rec {
+  pname = "rounded-windows-bms";
+  version = "2.2.0-bms-fix";
+
+  src = fetchFromGitHub {
+    owner = "MeguMario";
+    repo = "rounded-windows";
+    rev = "bms-fix";
+
+    # Put a fake hash first; Nix will tell you the real one.
+    hash = "sha256-5llnqW1dK3jsMRfvxb1VrSkZ/DSXsfU3PiNmpbb5CLw=";
+  };
+
+  nativeBuildInputs = [
+    glib
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    uuid="rounded-windows@marcosgt.github.io"
+    extension_dir="$out/share/gnome-shell/extensions/$uuid"
+
+    mkdir -p "$extension_dir"
+
+    cp metadata.json extension.js effect.js prefs.js stylesheet.css "$extension_dir/"
+
+    mkdir -p "$extension_dir/schemas"
+    cp schemas/*.xml "$extension_dir/schemas/"
+
+    glib-compile-schemas "$extension_dir/schemas"
+
+    runHook postInstall
+  '';
+
+  passthru = {
+    extensionUuid = "rounded-windows@marcosgt.github.io";
+  };
+
+  meta = {
+    description = "Rounded Window Corners GNOME extension with Blur-My-Shell compatibility fix";
+    homepage = "https://github.com/MeguMario/rounded-windows/tree/bms-fix";
+    license = lib.licenses.gpl3Only;
+    platforms = lib.platforms.linux;
+  };
+}

systems/x86_64-linux/drivebystation-nix/configuration.nix

@@ -10,6 +10,7 @@
 
 {
   imports = [
+    ./tigervnc.nix
     ./hardware/hardware-configuration.nix
   ];
 
@@ -47,9 +48,14 @@
 
   services = {
     # Enable Gnome Session
-    displayManager.gdm.enable = false;
+    displayManager.gdm.enable = true;
-    displayManager.sddm.enable = true;
+    displayManager.sddm.enable = false;
-    displayManager.sddm.wayland.enable = true;
+    # displayManager.sddm.wayland.enable = true;
+    displayManager.autoLogin = {
+      enable = false;
+      user = "andreas";
+    };
+
     displayManager.cosmic-greeter.enable = false;
     displayManager.defaultSession = "gnome";
     
@@ -140,6 +146,7 @@
     htop
     rivalcfg
     blender
+    freecad
     reaper
     discord
     betterdiscordctl
@@ -233,16 +240,19 @@
       }
     ];
   };
-  services.mullvad-vpn.enable = true;
+
-  services.mullvad-vpn.package = pkgs.mullvad-vpn;
+  services.mullvad-vpn = {
-  # Or disable the firewall altogether.
+    enable = true;
-  # networking.firewall.enable = false;
+    gui.enable = true;
+  };
 
   fonts = {
+
     packages = with pkgs; [
       noto-fonts
       noto-fonts-color-emoji
     ];
+
     fontconfig = {
       enable = true;
 
@@ -255,6 +265,23 @@
     };
   };
   
+  # services.xrdp = {
+  #   enable = true;
+  #   openFirewall = true;
+  #   defaultWindowManager = "cinnamon-session";
+  # };
+  
+  ### tigervnc
+  services.tigervnc = {
+    enable = false;
+    users = {
+      andreas = {
+        localhost = false;  # true for SSH-only
+      };
+    };
+  };
+  ### tigervnc END
+
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave

systems/x86_64-linux/drivebystation-nix/default.nix

@@ -34,6 +34,7 @@ in
   # inherit system;
   imports = [
     ./configuration.nix
+    ./mutter-tearing.nix
     ./video.nix
     inputs.aagl.nixosModules.default
   ];
@@ -42,11 +43,12 @@ in
       nix.settings.experimental-features = [ "nix-command" "flakes" ];
       # Define a user account. Don't forget to set a password with ‘passwd’.
       # Desktops
-      my-namespace.desktop-environment.xfce.enable = true;
+      my-namespace.desktop-environment.cinnamon.enable = true;
+      my-namespace.desktop-environment.xfce.enable = false;
       my-namespace.desktop-environment.gnome.enable = true;
-      my-namespace.desktop-environment.kde.enable = true;
+      my-namespace.desktop-environment.kde.enable = false;
-      my-namespace.desktop-environment.hyprland.enable = true;
+      my-namespace.desktop-environment.hyprland.enable = false;
-      my-namespace.desktop-environment.cosmic.enable = true;
+      my-namespace.desktop-environment.cosmic.enable = false;
       my-namespace.performance-tuning.enable = true;
       my-namespace.file-organization.enable = true;
       # GNOME-keyring
@@ -67,15 +69,16 @@ in
         ];
         packages = with pkgs; [
           # Packages from inputsq
-          inputs.game-of-life.packages.x86_64-linux.default
+          # inputs.game-of-life.packages.x86_64-linux.default
           inputs.zen-browser.packages.x86_64-linux.default
-          inputs.anikki.packages.x86_64-linux.default
+          # inputs.anikki.packages.x86_64-linux.default
           # We want flatpak support
           flatpak
           # GNOME shit
           thunderbird
           soundwireserver
-          vscode  
+          # vscode 
+          #  discord 
           spotify
           appimage-run  
           prismlauncher #replaces broken minecraft package
@@ -83,6 +86,7 @@ in
           terraform
           virt-manager
           nil
+          codex
           #  thunderbird
         ];
         
@@ -99,6 +103,7 @@ in
       # Open ports in the firewall.
       networking.firewall.allowedTCPPorts = [
         59010 #SoundWireServer
+        5901
         5001
         11434
         3389 #RDP
@@ -106,6 +111,7 @@ in
       ];
       networking.firewall.allowedUDPPorts = [
         59010 #SoundWireServer
+        5901
         5001
         11434
         3389 #RDP
@@ -120,6 +126,22 @@ in
       nixpkgs.config.allowBroken = true;
       powerManagement.cpuFreqGovernor = "performance";
       # Set up system Packages
+      environment.sessionVariables.GI_TYPELIB_PATH =
+      lib.makeSearchPath "lib/girepository-1.0" [
+        pkgs.my-namespace.rounded-blur
+      ];
+      environment.sessionVariables = {
+        # If you are using Hyprland, labwc, or Sway (wlroots-based):
+        WLR_DRM_NO_ATOMIC = "1"; 
+
+        KWIN_DRM_DISABLE_TRIPLE_BUFFERING="1";
+
+        # If you are using KDE Plasma (KWin):
+        KWIN_FORCE_SW_CURSOR = "1";
+        
+        # For modern wlroots (and Aquamarine in Hyprland) to force software cursors:
+        WLR_NO_HARDWARE_CURSORS = "1"; 
+      };
       environment.systemPackages = with pkgs; [
         git
         wine
@@ -130,8 +152,11 @@ in
         synergy
         mangohud
         my-namespace.udev-steelseries
-        my-namespace.hello
         my-namespace.linux-wallpaperengine
+        my-namespace.rounded-blur
+        my-namespace.rounded-windows-bms
+        my-namespace.cs-demo-manager
+        vscode-modernized
 
         (pkgs.writeShellScriptBin "switch-to-desktop" ''
           #!/bin/sh

systems/x86_64-linux/drivebystation-nix/hardware/graphics/intel.nix

@@ -39,6 +39,7 @@
       intel-vaapi-driver     # fallback
       intel-compute-runtime # OpenCL/Level Zero
       level-zero            # Level Zero API for compute
+      intel-graphics-compiler # Shader compiler for Arc GPUs allgedly needed for XPU
     ];
   };
 
@@ -127,6 +128,13 @@
     clinfo
     vulkan-tools
   ];
+  services.xserver.config = ''
+    Section "Device"
+      Identifier "AMD"
+      Driver "amdgpu"
+      Option "TearFree" "false"
+    EndSection
+  '';
   services.xserver.deviceSection = ''
     Option "TearFree" "false"
   '';

systems/x86_64-linux/drivebystation-nix/mutter-50-tearing-compat.patch

@@ -0,0 +1,36 @@
+diff --git a/src/meson.build b/src/meson.build
+--- a/src/meson.build
++++ b/src/meson.build
+@@ -1077,5 +1077,6 @@ wayland_protocols = [
+   ['single-pixel-buffer', 'staging', 1, ],
+   ['tablet', 'stable', 2, ],
++  ['tearing-control', 'staging', 1, ],
+   ['text-input-unstable-v3', 'private', ],
+   ['viewporter', 'stable', ],
+   ['xdg-activation', 'staging', 1, ],
+diff --git a/src/wayland/meta-wayland-dma-buf.c b/src/wayland/meta-wayland-dma-buf.c
+--- a/src/wayland/meta-wayland-dma-buf.c
++++ b/src/wayland/meta-wayland-dma-buf.c
+@@ -630,11 +630,22 @@ has_modifier (GArray   *modifiers,
+ }
+ 
+ #ifdef HAVE_NATIVE_BACKEND
++static gboolean
++async_supports_modifier (MetaKmsPlane *plane,
++                         uint32_t      drm_format,
++                         uint64_t      drm_modifier)
++{
++  GArray *async_modifiers =
++    meta_kms_plane_get_async_modifiers_for_format (plane, drm_format);
++  return async_modifiers && has_modifier (async_modifiers, drm_modifier);
++}
++
+ static gboolean
+ crtc_supports_modifier (MetaCrtcKms *crtc_kms,
+                         uint32_t     drm_format,
+-                        uint64_t     drm_modifier)
++                        uint64_t     drm_modifier,
++                        gboolean     is_async)
+ {
+   MetaKmsPlane *plane = meta_crtc_kms_get_assigned_primary_plane (crtc_kms);
+   GArray *crtc_modifiers;

systems/x86_64-linux/drivebystation-nix/mutter-tearing.nix

@@ -0,0 +1,59 @@
+{ lib, pkgs, ... }:
+
+let
+  # GNOME/mutter!3797, pinned because the MR is still under development.
+  mutterTearingRevision = "a8d56d423edde9e6d76f6b9cab663d82c65cf1a2";
+  mutterTearingPatch = pkgs.fetchurl {
+    url = "https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3797.diff";
+    hash = "sha256-3up5PsHX+BSQRKb9JS5bnJLPaTGmvV55M18tKkepIng=";
+  };
+in
+{
+  nixpkgs.overlays = [
+    (final: prev: {
+      mutter = prev.mutter.overrideAttrs (old: {
+        pname = "mutter-tearing";
+
+        # nixpkgs leaves Mutter's verbose topics compiled out by default.
+        # This is required for MUTTER_DEBUG=kms to emit the async commit flags.
+        mesonFlags = (old.mesonFlags or [ ]) ++ [ ];
+
+        # The MR currently targets Mutter 51. Apply it to the packaged Mutter
+        # 50 source, then resolve the four small context conflicts separately.
+        prePatch = ''
+          ${old.prePatch or ""}
+
+          set +e
+          patch --batch -p1 --forward < ${mutterTearingPatch}
+          mr_status=$?
+          set -e
+
+          if [ "$mr_status" -ne 0 ]; then
+            reject_count="$(find . -name '*.rej' -type f | wc -l)"
+            if [ "$reject_count" -ne 3 ]; then
+              echo "Unexpected number of Mutter !3797 rejects: $reject_count" >&2
+              exit 1
+            fi
+          fi
+
+          patch --batch -p1 --forward < ${./mutter-50-tearing-compat.patch}
+          find . -name '*.rej' -type f -delete
+        '';
+
+        passthru = (old.passthru or { }) // {
+          tearingMr = 3797;
+          tearingRevision = mutterTearingRevision;
+        };
+      });
+    })
+  ];
+
+  environment.sessionVariables = {
+    # Mutter keeps tearing support behind an experimental runtime switch.
+    MUTTER_DEBUG_EXPERIMENTAL_FEATURES = lib.mkDefault "tearing";
+
+    # Temporarily expose whether async atomic commits reach KMS or fall back
+    # to synchronized presentation. Remove this after collecting the log.
+    MUTTER_DEBUG = lib.mkDefault "kms";
+  };
+}

systems/x86_64-linux/drivebystation-nix/tigervnc.nix

@@ -0,0 +1,83 @@
+{ config, pkgs, lib, ... }:
+
+let
+  cfg = config.services.tigervnc;
+in
+{
+  options.services.tigervnc = {
+    enable = lib.mkEnableOption "TigerVNC x0vncserver (mirrors :0)";
+    users = lib.mkOption {
+      type = lib.types.attrsOf (lib.types.submodule ({ name, config, ... }: {
+        options = {
+          enableSharing = lib.mkOption { type = lib.types.bool; default = true; };
+          port = lib.mkOption { type = lib.types.int; default = 5901; };
+          localhost = lib.mkOption { type = lib.types.bool; default = false; };
+          #geometry = lib.mkOption { type = lib.types.str; default = ""; };
+        };
+      }));
+      default = { };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = [ pkgs.tigervnc pkgs.xhost pkgs.xauth ];
+
+    systemd.user.services = lib.mapAttrs' (user: opts:
+      let svcName = "tigervnc-x0vncserver-${user}";
+      in {
+        name = svcName;
+        value = lib.mkIf opts.enableSharing {
+          description = "TigerVNC x0vncserver sharing :0 for ${user}";
+          after = [ "graphical-session.target" ];
+          partOf = [ "graphical-session.target" ];
+          wantedBy = [ "graphical-session.target" ];
+
+          path = [ pkgs.tigervnc pkgs.xhost pkgs.xauth pkgs.coreutils ];
+
+          script = let
+            # Build args array to avoid shell escaping hell
+            vncArgs = [
+              "-display :0"
+              "-rfbport ${toString opts.port}"
+              "-rfbauth $HOME/.vnc/passwd"
+              "-AcceptSetDesktopSize=0"
+              "-AlwaysShared"
+            ] #++ lib.optionals (opts.geometry != "") [ "-Geometry ${opts.geometry}" ]
+              ++ lib.optionals opts.localhost [ "-localhost" ];
+          in ''
+            set -euxo pipefail
+
+            # Password check
+            mkdir -p "$HOME/.vnc"
+            if [ ! -r "$HOME/.vnc/passwd" ]; then
+              echo "ERROR: Run: vncpasswd ~/.vnc/passwd" >&2
+### CHANGE THE > in the above line TO A GREATER THAN SIGN! ###
+              exit 1
+            fi
+
+            # X authority
+            xhost +local:
+
+            # Clean x0vncserver args
+            ${pkgs.tigervnc}/bin/x0vncserver ${lib.concatStringsSep " " (map (arg: "${arg}") vncArgs)}
+          '';
+
+          preStop = ''
+            xhost -local:
+            pkill -f "x0vncserver.*${toString opts.port}"
+          '';
+
+          serviceConfig = {
+            Type = "simple";
+            Restart = "always";
+            RestartSec = "5s";
+            RuntimeDirectory = "vnc-${user}";
+          };
+        };
+      }
+    ) cfg.users;
+
+    networking.firewall.allowedTCPPorts =
+      lib.mapAttrsToList (_: opts: opts.port) cfg.users;
+  };
+}