pkgs: add pnpm-lock-export

pkgs/pnpm-lock-export/default.nix

@@ -0,0 +1,28 @@
+{ lib, buildNpmPackage, fetchFromGitHub }:
+buildNpmPackage rec {
+  pname = "pnpm-lock-export";
+  version = "0.4.0";
+
+  src = fetchFromGitHub {
+    owner = "cvent";
+    repo = "pnpm-lock-export";
+    rev = "v${version}";
+    hash = "sha256-vS6AW3R4go1Fdr3PBOCnuN4JDrDkl1lWVF7q+q+xDGg=";
+  };
+
+  npmDepsHash = "sha256-3uW/lzB+UDhFQtRb3X8szNlgAWTcSdwVdtyZvLu+cjI=";
+
+  postPatch = ''
+    cp ${./package-lock.json} package-lock.json
+    # Make the executable get installed to `bin/` instead of `bin/@cvent`
+    substituteInPlace package.json --replace "@cvent/pnpm-lock-export" "pnpm-lock-export"
+  '';
+
+  meta = with lib; {
+    description = "A utility for converting pnpm-lock.yaml to other lockfile formats";
+    homepage = "https://github.com/cvent/pnpm-lock-export";
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ ambroisie ];
+  };
+}