1 files changed, 96 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/desktops/gnustep/wrapGNUstepAppsHook.sh b/nixpkgs/pkgs/desktops/gnustep/wrapGNUstepAppsHook.sh
new file mode 100644
index 000000000000..8218ff1e7746
--- /dev/null
+++ b/nixpkgs/pkgs/desktops/gnustep/wrapGNUstepAppsHook.sh
@@ -0,0 +1,96 @@
+if [[ -z "${__nix_wrapGNUstepAppsHook-}" ]]; then
+    __nix_wrapGNUstepAppsHook=1 # Don't run this hook more than once.
+
+    # Inherit arguments given in mkDerivation
+    gnustepWrapperArgs=(${gnustepWrapperArgs-})
+
+    gnustepConfigVars+=(
+        GNUSTEP_MAKEFILES
+        NIX_GNUSTEP_SYSTEM_APPS
+        NIX_GNUSTEP_SYSTEM_ADMIN_APPS
+        NIX_GNUSTEP_SYSTEM_WEB_APPS
+        NIX_GNUSTEP_SYSTEM_TOOLS
+        NIX_GNUSTEP_SYSTEM_ADMIN_TOOLS
+        NIX_GNUSTEP_SYSTEM_LIBRARY
+        NIX_GNUSTEP_SYSTEM_HEADERS
+        NIX_GNUSTEP_SYSTEM_LIBRARIES
+        NIX_GNUSTEP_SYSTEM_DOC
+        NIX_GNUSTEP_SYSTEM_DOC_MAN
+        NIX_GNUSTEP_SYSTEM_DOC_INFO
+    )
+
+    wrapGNUstepApp() {
+        wrapProgram "$1" \
+            --set GNUSTEP_CONFIG_FILE "$out/GNUstep.conf" \
+            "${gnustepWrapperArgs[@]}"
+    }
+
+    ensureGNUstepConfig() (
+        if [[ -f "$out/GNUstep.conf" ]]; then
+            return
+        fi
+
+        echo "writing GNUstep config file"
+
+        gsAddToSearchPath() {
+            if [[ -d "$2" && "${!1-}" != *"$2"* ]]; then
+                addToSearchPath "$1" "$2"
+            fi
+        }
+
+        gsAddToIncludeSearchPath() {
+            local -n ref="$1"
+
+            if [[ -d "$2" && "${ref-}" != *"$2"* ]]; then
+                if [[ "${ref-}" != "" ]]; then
+                    ref+=" "
+                fi
+
+                ref+="$2"
+            fi
+        }
+
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_APPS "$out/lib/GNUstep/Applications"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_ADMIN_APPS "$out/lib/GNUstep/Applications"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_WEB_APPS "$out/lib/GNUstep/WebApplications"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_TOOLS "$out/bin"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_ADMIN_TOOLS "$out/sbin"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_LIBRARY "$out/lib/GNUstep"
+        gsAddToIncludeSearchPath NIX_GNUSTEP_SYSTEM_HEADERS "$out/include"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_LIBRARIES "$out/lib"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_DOC "$out/share/GNUstep/Documentation"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_DOC_MAN "$out/share/man"
+        gsAddToSearchPath NIX_GNUSTEP_SYSTEM_DOC_INFO "$out/share/info"
+
+        for var in "${gnustepConfigVars[@]}"; do
+            if [[ -n "${!var-}" ]]; then
+                printf '%s="%s"\n' "$var" "${!var}"
+            fi
+        done > "$out/GNUstep.conf"
+    )
+
+    # Note: $gnustepWrapperArgs still gets defined even if ${dontWrapGNUstepApps-} is set.
+    wrapGNUstepAppsHook() {
+        # skip this hook when requested
+        [[ -z "${dontWrapGNUstepApps-}" ]] || return 0
+
+        # guard against running multiple times (e.g. due to propagation)
+        [[ -z "$wrapGNUstepAppsHookHasRun" ]] || return 0
+        wrapGNUstepAppsHookHasRun=1
+
+        local targetDirs=("$prefix/bin")
+        echo "wrapping GNUstep applications in ${targetDirs[@]}"
+
+        for targetDir in "${targetDirs[@]}"; do
+            [[ -d "$targetDir" ]] || continue
+
+            while IFS= read -r -d '' file; do
+                ensureGNUstepConfig
+                echo "wrapping $file"
+                wrapGNUstepApp "$file"
+            done < <(find "$targetDir" ! -type d -executable -print0)
+        done
+    }
+
+    fixupOutputHooks+=(wrapGNUstepAppsHook)
+fi