use a patched zed to fix font display

flake.nix

@@ -20,11 +20,10 @@
   };
 
   outputs =
-    {
-      self,
-      nixpkgs,
-      home-manager,
-      ...
+    { self
+    , nixpkgs
+    , home-manager
+    , ...
     }@inputs:
     let
       inherit (self) outputs;
@@ -48,7 +47,7 @@
       devShells = forEachSystem (pkgs: import ./shell.nix { inherit pkgs; });
       formatter = forEachSystem (pkgs: pkgs.nixpkgs-fmt);
 
-      overlays = import ./overlays { inherit inputs outputs; };
+      overlays = import ./overlays { inherit inputs outputs lib; };
       nixosModules = import ./modules/nixos;
       homeManagerModules = import ./modules/home-manager;
 

home/features/desktop/default.nix

@@ -17,6 +17,7 @@
     kdenlive
     audacity
     mpv
+    zed-editor
   ];
 
   home.sessionVariables = {

overlays/default.nix

@@ -7,10 +7,22 @@
   # This one contains whatever you want to overlay
   # You can change versions, add patches, set compilation flags, anything really.
   # https://nixos.wiki/wiki/Overlays
-  modifications = _final: _prev: {
-    # example = prev.example.overrideAttrs (oldAttrs: rec {
-    # ...
-    # });
+  modifications = final: prev: {
+    zed-editor = final.callPackage prev.zed-editor.override {
+      rustPlatform = final.rustPlatform // {
+        buildRustPackage = args: final.rustPlatform.buildRustPackage (args // {
+          patches = (args.patches or [ ] ++ [
+            ./zed-use-custom-cosmic-text.patch
+          ]);
+          cargoLock = {
+            lockFile = ./zed.Cargo.lock;
+            outputHashes = args.cargoLock.outputHashes // {
+              "cosmic-text-0.11.2" = "sha256-ld9mrvtZIEftenn1D5IuXFQikJU2GAil6MCsrIh9o14=";
+            };
+          };
+        });
+      };
+    };
   };
 
   # When applied, the unstable nixpkgs set (declared in the flake inputs) will

overlays/zed-use-custom-cosmic-text.patch

@@ -0,0 +1,116 @@
+diff --git a/Cargo.lock b/Cargo.lock
+index d2dbb1cfd7..22b00f3661 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -2843,6 +2843,15 @@ dependencies = [
+  "libc",
+ ]
+
++[[package]]
++name = "core_maths"
++version = "0.1.0"
++source = "registry+https://github.com/rust-lang/crates.io-index"
++checksum = "e3b02505ccb8c50b0aa21ace0fc08c3e53adebd4e58caa18a36152803c7709a3"
++dependencies = [
++ "libm",
++]
++
+ [[package]]
+ name = "coreaudio-rs"
+ version = "0.11.3"
+@@ -2866,7 +2875,7 @@ dependencies = [
+ [[package]]
+ name = "cosmic-text"
+ version = "0.11.2"
+-source = "git+https://github.com/pop-os/cosmic-text?rev=542b20c#542b20ca4376a3b5de5fa629db1a4ace44e18e0c"
++source = "git+https://codeberg.org/shadows_withal/cosmic-text-with-pr-296?branch=296#94163d28dd71bb6e569cdc488f347622a4790dfa"
+ dependencies = [
+  "bitflags 2.6.0",
+  "fontdb",
+@@ -4280,9 +4289,9 @@ dependencies = [
+
+ [[package]]
+ name = "fontdb"
+-version = "0.18.0"
++version = "0.21.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "e32eac81c1135c1df01d4e6d4233c47ba11f6a6d07f33e0bba09d18797077770"
++checksum = "37be9fc20d966be438cd57a45767f73349477fb0f85ce86e000557f787298afb"
+ dependencies = [
+  "fontconfig-parser",
+  "log",
+@@ -9441,13 +9450,14 @@ checksum = "955d28af4278de8121b7ebeb796b6a45735dc01436d898801014aced2773a3d6"
+
+ [[package]]
+ name = "rustybuzz"
+-version = "0.14.1"
++version = "0.18.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "cfb9cf8877777222e4a3bc7eb247e398b56baba500c38c1c46842431adc8b55c"
++checksum = "c85d1ccd519e61834798eb52c4e886e8c2d7d698dd3d6ce0b1b47eb8557f1181"
+ dependencies = [
+  "bitflags 2.6.0",
+  "bytemuck",
+- "libm",
++ "core_maths",
++ "log",
+  "smallvec",
+  "ttf-parser",
+  "unicode-bidi-mirroring",
+@@ -12069,9 +12079,12 @@ checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
+
+ [[package]]
+ name = "ttf-parser"
+-version = "0.21.1"
++version = "0.24.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "2c591d83f69777866b9126b24c6dd9a18351f177e49d625920d19f989fd31cf8"
++checksum = "5be21190ff5d38e8b4a2d3b6a3ae57f612cc39c96e83cedeaf7abc338a8bac4a"
++dependencies = [
++ "core_maths",
++]
+
+ [[package]]
+ name = "tungstenite"
+@@ -12186,15 +12199,15 @@ checksum = "08f95100a766bf4f8f28f90d77e0a5461bbdb219042e7679bebe79004fed8d75"
+
+ [[package]]
+ name = "unicode-bidi-mirroring"
+-version = "0.2.0"
++version = "0.3.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "23cb788ffebc92c5948d0e997106233eeb1d8b9512f93f41651f52b6c5f5af86"
++checksum = "64af057ad7466495ca113126be61838d8af947f41d93a949980b2389a118082f"
+
+ [[package]]
+ name = "unicode-ccc"
+-version = "0.2.0"
++version = "0.3.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "1df77b101bcc4ea3d78dafc5ad7e4f58ceffe0b2b16bf446aeb50b6cb4157656"
++checksum = "260bc6647b3893a9a90668360803a15f96b85a5257b1c3a0c3daf6ae2496de42"
+
+ [[package]]
+ name = "unicode-ident"
+diff --git a/crates/gpui/Cargo.toml b/crates/gpui/Cargo.toml
+index 3d285ce59e..fe0eb79122 100644
+--- a/crates/gpui/Cargo.toml
++++ b/crates/gpui/Cargo.toml
+@@ -50,7 +50,7 @@ parking = "2.0.0"
+ parking_lot.workspace = true
+ postage.workspace = true
+ profiling.workspace = true
+-rand = { optional = true, workspace = true}
++rand = { optional = true, workspace = true }
+ raw-window-handle = "0.6"
+ refineable.workspace = true
+ resvg = { version = "0.41.0", default-features = false }
+@@ -116,7 +116,7 @@ as-raw-xcb-connection = "1"
+ ashpd.workspace = true
+ calloop = "0.13.0"
+ calloop-wayland-source = "0.3.0"
+-cosmic-text = { git = "https://github.com/pop-os/cosmic-text", rev = "542b20c" }
++cosmic-text = { git = "https://codeberg.org/shadows_withal/cosmic-text-with-pr-296", branch = "296" }
+ flume = "0.11"
+ wayland-backend = { version = "0.3.3", features = ["client_system", "dlopen"] }
+ wayland-client = { version = "0.31.2" }