Build support

pkgs/development/java-modules/m2install.nix

@@ -0,0 +1,21 @@
+{ stdenv, fetchurl }:
+{ version, baseName, package, sha512, type ? "jar" }:
+
+let
+  name = "${baseName}-${version}";
+  m2Path = "${package}/${baseName}/${version}";
+  m2File = "${name}.${type}";
+  src = fetchurl rec {
+      inherit sha512;
+      url = "mirror://maven/${m2Path}/${m2File}";
+  };
+in stdenv.mkDerivation rec {
+  inherit name m2Path m2File src;
+
+  installPhase = ''
+    mkdir -p $out/m2/$m2Path
+    cp $src $out/m2/$m2Path/$m2File
+  '';
+
+  phases = "installPhase";
+}