rtl: 0.12.3-beta -> 0.13.0

- Use `fetch-node-modules` to remove the 4161 line file `node-packages.nix`
- Only use nodejs-slim as a runtime dependency
- Shrink package size by >500M by excluding certain dev-only dependencies

helper/update-fixed-output-derivation.sh

@@ -0,0 +1,24 @@
+set -euo pipefail
+
+# The file that defines the derivation that should be updated
+file=$1
+# The name of the output of this flake that should be updated
+flakeOutput=$2
+# A pattern in a line preceding the hash that should be updated
+patternPrecedingHash=$3
+
+sed -i "/$patternPrecedingHash/,/hash/ s|hash = .*|hash = \"\";|" $file
+# Display stderr and capture it. stdbuf is required to disable output buffering.
+stderr=$(
+    nix build --no-link -L .#$flakeOutput |&
+      stdbuf -oL grep -v '\berror:.*failed to build$' |
+      tee /dev/stderr || :
+)
+hash=$(echo "$stderr" | sed -nE 's/.*?\bgot: *?(sha256-.*)/\1/p')
+if [[ ! $hash ]]; then
+    echo
+    echo "Error: No hash in build output."
+    exit 1
+fi
+sed -i "/$patternPrecedingHash/,/hash/ s|hash = .*|hash = \"$hash\";|" $file
+echo "(Note: The above hash mismatch message is not an error. It is part of the fetching process.)"

pkgs/default.nix

@@ -16,7 +16,7 @@ let self = {
   joinmarket = pkgs.callPackage ./joinmarket { nbPythonPackageOverrides = import ./python-packages self; };
   lndinit = pkgs.callPackage ./lndinit { };
   liquid-swap = pkgs.python3Packages.callPackage ./liquid-swap { };
-  rtl = pkgs.callPackage ./rtl { };
+  rtl = pkgs.callPackage ./rtl { inherit (self) fetchNodeModules; };
   # The secp256k1 version used by joinmarket
   secp256k1 = pkgs.callPackage ./secp256k1 { };
   spark-wallet = pkgs.callPackage ./spark-wallet { };

pkgs/rtl/composition.nix

@@ -1,17 +0,0 @@
-# This file has been generated by node2nix 1.9.0. Do not edit!
-
-{pkgs ? import <nixpkgs> {
-    inherit system;
-  }, system ? builtins.currentSystem, nodejs ? pkgs."nodejs-12_x"}:
-
-let
-  nodeEnv = import "${toString pkgs.path}/pkgs/development/node-packages/node-env.nix" {
-    inherit (pkgs) stdenv lib python2 runCommand writeTextFile writeShellScript;
-    inherit pkgs nodejs;
-    libtool = if pkgs.stdenv.isDarwin then pkgs.darwin.cctools else null;
-  };
-in
-import ./node-packages.nix {
-  inherit (pkgs) fetchurl nix-gitignore stdenv lib fetchgit;
-  inherit nodeEnv;
-}

pkgs/rtl/default.nix

@@ -1,16 +1,67 @@
-{ pkgs, lib, makeWrapper }:
+{ lib
-let
+, stdenvNoCC
-  nodejs = pkgs.nodejs-14_x;
+, nodejs-16_x
-  nodePackages = import ./composition.nix { inherit pkgs nodejs; };
+, nodejs-slim-16_x
-in
+, fetchNodeModules
-nodePackages.package.overrideAttrs (old: {
+, fetchpatch
-  nativeBuildInputs = (old.nativeBuildInputs or []) ++ [
+, fetchurl
+, applyPatches
+, makeWrapper
+}:
+let self = stdenvNoCC.mkDerivation {
+  pname = "rtl";
+  version = "0.13.0";
+
+  src = applyPatches {
+    src = fetchurl {
+      url = "https://github.com/Ride-The-Lightning/RTL/archive/refs/tags/v${self.version}.tar.gz";
+      hash = "sha256-6eopIO5ge6+vkNvZomjAB6e5Qi2kkhXpnSOWQQm53R0=";
+    };
+
+    patches = [
+      # Move non-runtime deps to `devDependencies`
+      # https://github.com/Ride-The-Lightning/RTL/pull/1070
+      (fetchpatch {
+        url = "https://github.com/Ride-The-Lightning/RTL/pull/1070.patch";
+        sha256 = "sha256-esDkYI27SNzj2AhYHS9XqlW0r2mr+o0K4A6PUE2kbWU=";
+      })
+    ];
+  };
+
+  passthru = {
+    nodejs = nodejs-16_x;
+    nodejsRuntime = nodejs-slim-16_x;
+
+    nodeModules = fetchNodeModules {
+      inherit (self) src nodejs;
+      hash = "sha256-LmCrf+lIXz9i9NVALYk9IOBUoPbW8fj+fUsyVJgAANI=";
+    };
+  };
+
+  nativeBuildInputs = [
     makeWrapper
   ];
 
-  postInstall = ''
+  phases = "unpackPhase patchPhase installPhase";
-    makeWrapper ${nodejs}/bin/node $out/bin/rtl \
+
-      --add-flags $out/lib/node_modules/rtl/rtl
+  # `src` already contains the precompiled frontend and backend.
+  # Copy all files required for packaging, like in
+  # https://github.com/Ride-The-Lightning/RTL/blob/master/dockerfiles/Dockerfile
+  installPhase = ''
+    dest=$out/lib/node_modules/rtl
+    mkdir -p $dest
+    cp -r \
+      rtl.js \
+      package.json \
+      frontend \
+      backend \
+      ${self.nodeModules}/lib/node_modules \
+      $dest
+
+    makeWrapper ${self.nodejsRuntime}/bin/node $out/bin/rtl \
+      --add-flags $dest/rtl.js
+
+    runHook postInstall
   '';
 
   meta = with lib; {
@@ -20,4 +71,4 @@ nodePackages.package.overrideAttrs (old: {
     maintainers = with maintainers; [ nixbitcoin earvstedt ];
     platforms = platforms.unix;
   };
-})
+}; in self

pkgs/rtl/generate.sh

@@ -1,44 +1,40 @@
 #!/usr/bin/env nix-shell
-#! nix-shell -i bash -p nodePackages.node2nix gnupg wget jq gnused
+#! nix-shell -i bash -p gnupg wget gnused
 set -euo pipefail
 
-TMPDIR="$(mktemp -d -p /tmp)"
+version="0.13.0"
-trap "rm -rf $TMPDIR" EXIT
-
-version="0.12.3"
 repo=https://github.com/Ride-The-Lightning/RTL
 
+scriptDir=$(cd "${BASH_SOURCE[0]%/*}" && pwd)
+
+updateSrc() {
+    TMPDIR="$(mktemp -d /tmp/rtl.XXX)"
+    trap "rm -rf $TMPDIR" EXIT
+
     # Fetch and verify source tarball
-file=v${version}.tar.gz
-url=$repo/archive/refs/tags/$file
     export GNUPGHOME=$TMPDIR
+    # Fetch saubyk's key
     gpg --keyserver hkps://keyserver.ubuntu.com --recv-key 3E9BD4436C288039CA827A9200C9E2BC2E45666F
-wget -P $TMPDIR $url
+    file=v${version}.tar.gz
+    wget -P $TMPDIR $repo/archive/refs/tags/$file
     wget -P $TMPDIR $repo/releases/download/v${version}/$file.asc
     gpg --verify $TMPDIR/$file.asc $TMPDIR/$file
     hash=$(nix hash file $TMPDIR/$file)
 
-# Extract source
+    sed -i "
-src=$TMPDIR/src
+      s|\bversion = .*;|version = \"$version\";|
-mkdir $src
+      s|\bhash = .*;|hash = \"$hash\";|
-tar xvf $TMPDIR/$file -C $src --strip-components 1 >/dev/null
+    " default.nix
+}
 
-# Generate nix pkg
+updateNodeModulesHash() {
-node2nix \
+    $scriptDir/../../helper/update-fixed-output-derivation.sh ./default.nix rtl.nodeModules nodeModules
-  --input $src/package.json \
+}
-  --lock $src/package-lock.json \
-  --composition composition.nix \
-  --no-copy-node-env
 
-# Use node-env.nix from nixpkgs
+if [[ $# == 0 ]]; then
-nodeEnvImport='import "${toString pkgs.path}/pkgs/development/node-packages/node-env.nix"'
+    # Each of these can be run separately
-sed -i "s|import ./node-env.nix|$nodeEnvImport|" composition.nix
+    updateSrc
-
+    updateNodeModulesHash
-# Use the verified package src
+else
-read -d '' fetchurl <<EOF || :
+    eval "$@"
-fetchurl {
+fi
-      url = "$url";
-      hash = "$hash";
-    };
-EOF
-sed -i "s|src = .*/src;|src = ${fetchurl//$'\n'/\\n}|" node-packages.nix