feat: Fix improved-crosshairs and allow customisation of alternatives

tf2/packages/default.nix

@@ -41,6 +41,8 @@ in lib.mergeAttrsList [
   { mastercomfig = callPackage ./mastercomfig.nix {}; }
   { huds = callPackage ./huds {}; }
   { maps = callPackage ./maps {}; }
-  (callPackage ./misc.nix {})
+  (builtins.mapAttrs
+    (_: v: callPackage v {})
+    (import ./misc {inherit lib;}))
   (callPackage ./scripts.nix {})
 ]

tf2/packages/misc.nix

@@ -1,14 +0,0 @@
-{ fetchFromGameBanana, mkTf2Config, ... }:
-
-{
-  improved-crosshairs = mkTf2Config {
-    pname = "improved-crosshairs";
-    custom = [
-      (fetchFromGameBanana {
-        name = "improved-crosshairs";
-        id = "1047153";
-        hash = "sha256-ULcSfxuiGY1YCE1zQ693183F7ZRC11tYhvDMJKyzL1A=";
-      })
-    ];
-  };
-}

tf2/packages/misc/default.nix

@@ -0,0 +1,10 @@
+{ lib, ... }:
+
+lib.mapAttrs'
+  (file: _:
+    lib.nameValuePair
+      (lib.removeSuffix ".nix" file)
+      (import ./${file}))
+  (lib.filterAttrs
+    (file: _: lib.hasSuffix ".nix" file && file != "default.nix")
+    (builtins.readDir ./.))

tf2/packages/misc/improved-crosshairs.nix

@@ -0,0 +1,34 @@
+{ fetchFromGameBanana
+, stdenv
+, lib
+# Alternate crosshairs to use.  See their README.
+, alternates ? []
+}:
+
+stdenv.mkDerivation {
+  pname = "improved-crosshairs";
+  version = "2.0";
+  src = fetchFromGameBanana {
+    name = "improved-crosshairs";
+    id = "1047153";
+    hash = "sha256-ULcSfxuiGY1YCE1zQ693183F7ZRC11tYhvDMJKyzL1A=";
+  };
+  buildPhase = ''
+    ${lib.toShellVar "alternates" alternates}
+    dest_dir="Crosshairs/materials/vgui/replay/thumbnails/"
+    for alt in "''${alternates[@]}"; do
+      dest="$dest_dir/$(sed -e 's/\(.*\) \[.*\]$/\1/' <<< "$alt").vtf"
+      src="Alternates/$alt.vtf"
+      if [ ! -e "$src" ]; then
+        echo "Alternate '$alt' does not exist!"
+        exit 1
+      else
+        mv "$src" "$dest"
+      fi
+    done
+  '';
+  installPhase = ''
+    mkdir -p $out/custom
+    mv Crosshairs "$out/custom/improved-crosshairs"
+  '';
+}