2 files changed, 73 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/build-support/make-darwin-bundle/default.nix b/nixpkgs/pkgs/build-support/make-darwin-bundle/default.nix
new file mode 100644
index 000000000000..52dd54b0b2c4
--- /dev/null
+++ b/nixpkgs/pkgs/build-support/make-darwin-bundle/default.nix
@@ -0,0 +1,26 @@
+# given a package with an executable and an icon, make a darwin bundle for
+# it. This package should be used when generating launchers for native Darwin
+# applications. If the package conatins a .desktop file use
+# `desktopToDarwinLauncher` instead.
+
+{ lib, writeShellScript, writeDarwinBundle }:
+
+{ name # The name of the Application file.
+, exec # Executable file.
+, icon ? "" # Optional icon file.
+}:
+
+writeShellScript "make-darwin-bundle-${name}" (''
+  function makeDarwinBundlePhase() {
+    mkdir -p "''${!outputBin}/Applications/${name}.app/Contents/MacOS"
+    mkdir -p "''${!outputBin}/Applications/${name}.app/Contents/Resources"
+
+    if [ -n "${icon}" ]; then
+      ln -s "${icon}" "''${!outputBin}/Applications/${name}.app/Contents/Resources"
+    fi
+
+    ${writeDarwinBundle}/bin/write-darwin-bundle "''${!outputBin}" "${name}" "${exec}"
+  }
+
+  preDistPhases+=" makeDarwinBundlePhase"
+'')
diff --git a/nixpkgs/pkgs/build-support/make-darwin-bundle/write-darwin-bundle.nix b/nixpkgs/pkgs/build-support/make-darwin-bundle/write-darwin-bundle.nix
new file mode 100644
index 000000000000..752cbbde2a31
--- /dev/null
+++ b/nixpkgs/pkgs/build-support/make-darwin-bundle/write-darwin-bundle.nix
@@ -0,0 +1,47 @@
+{ writeScriptBin, lib, makeBinaryWrapper }:
+
+let
+  pListText = lib.generators.toPlist { } {
+    CFBundleDevelopmentRegion = "English";
+    CFBundleExecutable = "$name";
+    CFBundleIconFile = "$icon";
+    CFBundleIconFiles = [ "$icon" ];
+    CFBundleIdentifier = "org.nixos.$name";
+    CFBundleInfoDictionaryVersion = "6.0";
+    CFBundleName = "$name";
+    CFBundlePackageType = "APPL";
+    CFBundleSignature = "???";
+  };
+in writeScriptBin "write-darwin-bundle" ''
+    shopt -s nullglob
+
+    readonly prefix=$1
+    readonly name=$2
+    # TODO: support executables with spaces in their names
+    readonly execName=''${3%% *} # Before the first space
+    [[ $3 =~ " " ]] && readonly execArgs=''${3#* } # Everything after the first space
+    readonly icon=$4.icns
+    readonly squircle=''${5:-1}
+    readonly plist=$prefix/Applications/$name.app/Contents/Info.plist
+    readonly binary=$prefix/bin/$execName
+    readonly bundleExecutable=$prefix/Applications/$name.app/Contents/MacOS/$name
+
+    cat > "$plist" <<EOF
+${pListText}
+EOF
+
+    if [[ $squircle == 0 || $squircle == "false" ]]; then
+      sed  '/CFBundleIconFiles/,\|</array>|d' -i "$plist"
+    fi
+
+    if [[ -n "$execArgs" ]]; then
+      (
+        source ${makeBinaryWrapper}/nix-support/setup-hook
+        # WORKAROUND: makeBinaryWrapper fails when -u is set
+        set +u
+        makeBinaryWrapper "$binary" "$bundleExecutable" --add-flags "$execArgs"
+      )
+    else
+      ln -s "$binary" "$bundleExecutable"
+    fi
+''