Add a derivation for loomio

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1710889954,
+        "narHash": "sha256-Pr6F5Pmd7JnNEMHHmspZ0qVqIBVxyZ13ik1pJtm2QXk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7872526e9c5332274ea5932a0c3270d6e4724f3b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,17 @@
+{
+  description = "The loomio flake";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = {nixpkgs, flake-utils, ...}:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in rec {
+        packages = rec {
+          loomio = pkgs.callPackage ./pkg/loomio/default.nix {};
+          inherit pkgs;
+        };
+    });
+}

pkg/loomio/default.nix

@@ -0,0 +1,30 @@
+{stdenv, callPackage, bundlerEnv, ruby_3_2 }:
+
+let
+  gemfile-patch = callPackage ./gemfile-patch.nix {};
+  src = callPackage ./source.nix { patches = [gemfile-patch];};
+  gems = bundlerEnv {
+    name = "loomio-env";
+    ruby = ruby_3_2;
+    gemset = ./. + "/gemset.nix";
+    gemdir = src;
+  };
+in stdenv.mkDerivation {
+  name = "loomio";
+  inherit src;
+  buildInputs = [gems ruby_3_2];
+  installPhase = ''
+    mkdir -p $out/{bin,share/loomio}
+    cp -r * $out/share/loomio
+    bin=$out/bin/loomio
+    cat > $bin <<EOF
+#!/usr/bin/env bash
+
+set -e
+export BUNDLE_FORCE_RUBY_PLATFORM=true
+exec ${gems}/bin/bundle exec puma -C $out/share/loomio/config/puma.rb
+
+EOF
+    chmod +x $bin
+  '';
+}

pkg/loomio/gemfile-patch.nix

@@ -0,0 +1,6 @@
+{fetchurl}:
+fetchurl {
+ url = "https://github.com/akshaymankar/loomio/commit/528641fd04135a186232568fbf9a4717e2053e86.patch";
+ hash = "sha256-sg/4U72gZHoTYepZ4dIQlyC4YBjU5+YgIKI/Oj+XlRs=";
+}
+

pkg/loomio/source.nix

@@ -0,0 +1,17 @@
+# This file was generated by pkgs.mastodon.updateScript.
+{ fetchFromGitHub, applyPatches, patches ? [] }:
+let
+  version = "2.22.2";
+in
+(
+  applyPatches {
+    src = fetchFromGitHub {
+      owner = "loomio";
+      repo = "loomio";
+      rev = "v${version}";
+      hash = "sha256-JJ0WBHSRUWacRbpF5Pssj3zxG0I7351kCxMKHiNpw5k=";
+    };
+    patches = patches ++ [];
+  }) // {
+  inherit version;
+}

pkg/loomio/update.sh

@@ -0,0 +1,114 @@
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p ruby_3_2 bundix coreutils diffutils nix-prefetch-github gnused jq
+set -ex
+
+OWNER=loomio
+REPO=loomio
+
+POSITIONAL=()
+while [[ $# -gt 0 ]]; do
+    key="$1"
+
+    case $key in
+        --owner)
+            OWNER="$2"
+            shift # past argument
+            shift # past value
+            ;;
+        --repo)
+            REPO="$2"
+            shift # past argument
+            shift # past value
+            ;;
+        --ver)
+            VERSION="$2"
+            shift # past argument
+            shift # past value
+            ;;
+        --rev)
+            REVISION="$2"
+            shift # past argument
+            shift # past value
+            ;;
+        --patches)
+            PATCHES="$2"
+            shift # past argument
+            shift # past value
+            ;;
+        *)  # unknown option
+            POSITIONAL+=("$1")
+            shift # past argument
+            ;;
+    esac
+done
+
+if [[ -n "$POSITIONAL" ]]; then
+    echo "Usage: update.sh [--owner OWNER] [--repo REPO] [--ver VERSION] [--rev REVISION] [--patches PATCHES]"
+    echo "OWNER and REPO must be paths on github."
+    echo "If REVISION is not provided, the latest tag from github.com/mastodon/mastodon is fetched and VERSION is calculated from it."
+    echo "If OWNER and REPO are not provided, it defaults they default to mastodon and mastodon."
+    echo "PATCHES, if provided, should be one or more Nix expressions separated by spaces."
+    exit 1
+fi
+
+if [[ -z "$REVISION" ]]; then
+    REVISION="$(curl ${GITHUB_TOKEN:+" -u \":$GITHUB_TOKEN\""} -s "https://api.github.com/repos/$OWNER/$REPO/releases" | jq -r  'map(select(.prerelease == false)) | .[0].tag_name')"
+fi
+
+VERSION="$(echo "$REVISION" | cut -c2-)"
+
+rm -f gemset.nix source.nix
+cd "$(dirname "${BASH_SOURCE[0]}")" || exit 1
+
+WORK_DIR=$(mktemp -d)
+
+# Check that working directory was created.
+if [[ -z "$WORK_DIR" || ! -d "$WORK_DIR" ]]; then
+    echo "Could not create temporary directory"
+    exit 1
+fi
+
+# Delete the working directory on exit.
+function cleanup {
+    # Report errors, if any, from nix-prefetch-git
+    grep "fatal" $WORK_DIR/nix-prefetch-git.out >/dev/stderr || true
+    rm -rf "$WORK_DIR"
+}
+trap cleanup EXIT
+
+echo "Fetching source code $REVISION"
+JSON=$(nix-prefetch-github "$OWNER" "$REPO" --rev "$REVISION" 2> $WORK_DIR/nix-prefetch-git.out)
+HASH=$(echo "$JSON" | jq -r .hash)
+
+cat > source.nix << EOF
+# This file was generated by pkgs.mastodon.updateScript.
+{ fetchFromGitHub, applyPatches, patches ? [] }:
+let
+  version = "$VERSION";
+in
+(
+  applyPatches {
+    src = fetchFromGitHub {
+      owner = "$OWNER";
+      repo = "$REPO";
+      rev = "v\${version}";
+      hash = "$HASH";
+    };
+    patches = patches ++ [$PATCHES];
+  }) // {
+  inherit version;
+}
+EOF
+SOURCE_DIR="$(nix-build --no-out-link -E '(import <nixpkgs> {}).callPackage ./source.nix {}')"
+
+echo "Creating gemset.nix"
+pushd $SOURCE_DIR
+bundle lock --add-platform ruby --print > Gemfile.lock
+popd
+BUNDLE_FORCE_RUBY_PLATFORM=true bundix --lockfile="$SOURCE_DIR/Gemfile.lock" --gemfile="$SOURCE_DIR/Gemfile"
+echo "" >> gemset.nix  # Create trailing newline to please EditorConfig checks
+
+# echo "Creating yarn-hash.nix"
+# YARN_HASH="$(prefetch-yarn-deps "$SOURCE_DIR/yarn.lock")"
+# YARN_HASH="$(nix hash to-sri --type sha256 "$YARN_HASH")"
+# sed -i "s/sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=/$YARN_HASH/g" source.nix