1 files changed, 54 insertions, 0 deletions
diff --git a/pkgs/tools/graphics/ldgallery/viewer/default.nix b/pkgs/tools/graphics/ldgallery/viewer/default.nix
new file mode 100644
index 00000000000..f4cebde8607
--- /dev/null
+++ b/pkgs/tools/graphics/ldgallery/viewer/default.nix
@@ -0,0 +1,54 @@
+{ lib, stdenv, fetchFromGitHub, pkgs, nodejs-12_x, pandoc, CoreServices }:
+
+with lib;
+
+let
+  # Note for maintainers:
+  # * keep version in sync with the ldgallery compiler
+  # * regenerate node-*.nix with `./generate.sh <git release tag>`
+  sourcePkg = fetchFromGitHub {
+    owner = "pacien";
+    repo = "ldgallery";
+    rev = "v2.0";
+    sha256 = "1a82wy6ns1434gdba2l04crvr5waf03y02bappcxqci2cfb1cznz";
+  };
+
+  nodePackages = import ./node-composition.nix {
+    inherit pkgs;
+    inherit (stdenv.hostPlatform) system;
+
+    # some native node dependencies still require NodeJS 12 with Python 2
+    nodejs = nodejs-12_x;
+  };
+
+  nodePkg = nodePackages.package.override {
+    src = "${sourcePkg}/viewer";
+    postInstall = "npm run build";
+    buildInputs = optionals stdenv.isDarwin [ CoreServices ];
+  };
+
+in
+
+# making sure that the source and the node package are in sync
+assert versions.majorMinor nodePkg.version == removePrefix "v" sourcePkg.rev;
+
+stdenv.mkDerivation {
+  pname = nodePkg.packageName;
+  version = nodePkg.version;
+  src = nodePkg;
+
+  buildInputs = [ pandoc ];
+
+  installPhase = ''
+    mkdir -p "$out/share/ldgallery"
+    cp -rp "lib/node_modules/ldgallery-viewer/dist" \
+      "$out/share/ldgallery/viewer/"
+    cp -rp "lib/node_modules/ldgallery-viewer/examples" \
+      "$out/share/ldgallery/viewer/"
+
+    mkdir -p "$out/share/man/man7"
+    pandoc --standalone --to man \
+      "lib/node_modules/ldgallery-viewer/ldgallery-viewer.7.md" \
+      --output "$out/share/man/man7/ldgallery-viewer.7"
+  '';
+}