feat: use patches

packages/winapps-launcher/WinAppsLauncher.diff

@@ -0,0 +1,11 @@
+--- a/WinAppsLauncher.sh
++++ b/WinAppsLauncher.sh
+@@ -19,7 +19,7 @@ declare -rx EC_WIN_NOT_SPEC=6
+ declare -rx EC_NO_WIN_FOUND=7
+
+ # Paths
+-declare -rx ICONS_PATH="./Icons"
++declare -rx ICONS_PATH="@out@/Icons"
+ declare -rx APPDATA_PATH="${HOME}/.local/share/winapps"
+ declare -rx CONFIG_PATH="${HOME}/.config/winapps"
+ declare -rx CONFIG_FILE="${CONFIG_PATH}/winapps.conf"

packages/winapps-launcher/default.nix

@@ -29,16 +29,18 @@ stdenv.mkDerivation rec {
     (callPackage ../winapps { })
   ];
 
+  patches = [ ./WinAppsLauncher.diff ];
+
+  postPatch = ''
+    substituteAllInPlace WinAppsLauncher.sh
+  '';
+
   installPhase = ''
     runHook preInstall
 
     mkdir -p $out
     cp -r ./Icons $out/Icons
 
-    sed -E -i \
-      -e "$(printf "%s$out%s" 's|^declare -rx ICONS_PATH="./Icons"|declare -rx ICONS_PATH="' '/Icons"|')" \
-      WinAppsLauncher.sh
-
     install -m755 -D WinAppsLauncher.sh $out/bin/winapps-launcher
     install -Dm444 -T Icons/AppIcon.svg $out/share/pixmaps/winapps.svg