mirakurun: init at 3.3.0

pkgs/development/node-packages/default.nix

@@ -60,6 +60,36 @@ let
       nativeBuildInputs = drv.nativeBuildInputs or [] ++ [ pkgs.psc-package self.pulp ];
     });
 
+    mirakurun = super.mirakurun.override rec {
+      nativeBuildInputs = with pkgs; [ makeWrapper ];
+      postInstall = let
+        runtimeDeps = [ nodejs ] ++ (with pkgs; [ bash which v4l_utils ]);
+      in
+      ''
+        substituteInPlace $out/lib/node_modules/mirakurun/processes.json \
+          --replace "/usr/local" ""
+
+        # XXX: Files copied from the Nix store are non-writable, so they need
+        # to be given explicit write permissions
+        substituteInPlace $out/lib/node_modules/mirakurun/lib/Mirakurun/config.js \
+          --replace 'fs.copyFileSync("config/server.yml", path);' \
+                    'fs.copyFileSync("config/server.yml", path); fs.chmodSync(path, 0o644);' \
+          --replace 'fs.copyFileSync("config/tuners.yml", path);' \
+                    'fs.copyFileSync("config/tuners.yml", path); fs.chmodSync(path, 0o644);' \
+          --replace 'fs.copyFileSync("config/channels.yml", path);' \
+                    'fs.copyFileSync("config/channels.yml", path); fs.chmodSync(path, 0o644);'
+
+        # XXX: The original mirakurun command uses PM2 to manage the Mirakurun
+        # server.  However, we invoke the server directly and let systemd
+        # manage it to avoid complication. This is okay since no features
+        # unique to PM2 is currently being used.
+        makeWrapper ${nodejs}/bin/npm $out/bin/mirakurun \
+          --add-flags "start" \
+          --run "cd $out/lib/node_modules/mirakurun" \
+          --prefix PATH : ${pkgs.lib.makeBinPath runtimeDeps}
+      '';
+    };
+
     node-inspector = super.node-inspector.override {
       buildInputs = [ self.node-pre-gyp ];
       meta.broken = since "10";