Modernize buildsystem (#199)

* flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/59cf3f1447cfc75087e7273b04b31e689a8599fb' (2023-08-01)
  → 'github:hercules-ci/flake-parts/7f53fdb7bdc5bb237da7fefef12d099e4fd611ca' (2023-09-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/cf73a86c35a84de0e2f3ba494327cf6fb51c0dfd' (2023-08-10)
  → 'github:NixOS/nixpkgs/517501bcf14ae6ec47efd6a17dda0ca8e6d866f9' (2023-09-27)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/19dee4bf6001849006a63f3435247316b0488e99' (2023-08-12)
  → 'github:numtide/treefmt-nix/720bd006d855b08e60664e4683ccddb7a9ff614a' (2023-09-27)

* nix-update: convert to pyproject

* drop old pkgs.nixVersions.stable fallback

* add create-release.sh script

bin/create-release.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -eu -o pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
+cd "$SCRIPT_DIR/.."
+
+version=${1:-}
+if [[ -z "$version" ]]; then
+  echo "USAGE: $0 version" >&2
+  exit 1
+fi
+
+if [[ "$(git symbolic-ref --short HEAD)" != "master" ]]; then
+  echo "must be on master branch" >&2
+  exit 1
+fi
+
+# ensure we are up-to-date
+uncommitted_changes=$(git diff --compact-summary)
+if [[ -n "$uncommitted_changes" ]]; then
+  echo -e "There are uncommitted changes, exiting:\n${uncommitted_changes}" >&2
+  exit 1
+fi
+git pull [email protected]:Mic92/nix-update master
+unpushed_commits=$(git log --format=oneline origin/master..master)
+if [[ "$unpushed_commits" != "" ]]; then
+  echo -e "\nThere are unpushed changes, exiting:\n$unpushed_commits" >&2
+  exit 1
+fi
+sed -i -e "s!^version = \".*\"\$!version = \"${version}\"!" pyproject.toml default.nix
+git add pyproject.toml default.nix
+nix flake check -vL
+nix develop -c pytest -s .
+git commit -m "bump version ${version}"
+git tag -e "${version}"
+
+echo "now run 'git push --tags origin master'"

default.nix

@@ -3,13 +3,16 @@
 
 
 pkgs.python311.pkgs.buildPythonApplication {
-  name = "nix-update";
+  pname = "nix-update";
+  version = "0.19.3";
   src = ./.;
+  format = "pyproject";
   buildInputs = [ pkgs.makeWrapper ];
+  nativeBuildInputs = [ pkgs.python311.pkgs.setuptools ];
   nativeCheckInputs = [
     pkgs.python311.pkgs.pytest
     # technically not test inputs, but we need it for development in PATH
-    pkgs.nixVersions.stable or pkgs.nix_2_4
+    pkgs.nixVersions.stable
     pkgs.nix-prefetch-git
   ];
   checkPhase = ''

pyproject.toml

@@ -1,3 +1,26 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "nix-update"
+description = "Swiss-knife for updating nix packages"
+version = "0.19.3"
+authors = [{ name = "Jörg Thalheim", email = "[email protected]" }]
+license = { text = "MIT" }
+classifiers = [
+  "Development Status :: 5 - Production/Stable",
+  "Environment :: Console",
+  "Topic :: Utilities",
+  "Intended Audience :: Developers",
+]
+
+[project.urls]
+Homepage = "https://github.com/Mic92/nix-update"
+
+[project.scripts]
+nix-update = "nix_update:main"
+
 [tool.ruff]
 target-version = "py311"
 line-length = 88
@@ -7,6 +30,7 @@ ignore = [ "E501" ]
 
 [tool.mypy]
 python_version = "3.11"
+pretty = true
 warn_redundant_casts = true
 disallow_untyped_calls = true
 disallow_untyped_defs = true