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#!/usr/bin/env nix-shell
#!nix-shell update-luarocks-shell.nix -i python3
# format:
# $ nix run nixpkgs.python3Packages.black -c black update.py
# type-check:
# $ nix run nixpkgs.python3Packages.mypy -c mypy update.py
# linted:
# $ nix run nixpkgs.python3Packages.flake8 -c flake8 --ignore E501,E265,E402 update.py
import inspect
import os
import tempfile
import shutil
from dataclasses import dataclass
import subprocess
import csv
import logging
import textwrap
from multiprocessing.dummy import Pool
from typing import List, Tuple, Optional
from pathlib import Path
log = logging.getLogger()
log.addHandler(logging.StreamHandler())
ROOT = Path(os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))).parent.parent # type: ignore
from pluginupdate import Editor, update_plugins, FetchConfig, CleanEnvironment
PKG_LIST="maintainers/scripts/luarocks-packages.csv"
TMP_FILE="$(mktemp)"
GENERATED_NIXFILE="pkgs/development/lua-modules/generated-packages.nix"
LUAROCKS_CONFIG="$NIXPKGS_PATH/maintainers/scripts/luarocks-config.lua"
HEADER = """/* {GENERATED_NIXFILE} is an auto-generated file -- DO NOT EDIT!
Regenerate it with:
nixpkgs$ ./maintainers/scripts/update-luarocks-packages
You can customize the generated packages in pkgs/development/lua-modules/overrides.nix
*/
""".format(GENERATED_NIXFILE=GENERATED_NIXFILE)
FOOTER="""
}
/* GENERATED - do not edit this file */
"""
@dataclass
class LuaPlugin:
name: str
'''Name of the plugin, as seen on luarocks.org'''
src: str
'''address to the git repository'''
ref: Optional[str]
'''git reference (branch name/tag)'''
version: Optional[str]
'''Set it to pin a package '''
server: Optional[str]
'''luarocks.org registers packages under different manifests.
Its value can be 'http://luarocks.org/dev'
'''
luaversion: Optional[str]
'''Attribue of the lua interpreter if a package is available only for a specific lua version'''
maintainers: Optional[str]
''' Optional string listing maintainers separated by spaces'''
@property
def normalized_name(self) -> str:
return self.name.replace(".", "-")
# rename Editor to LangUpdate/ EcosystemUpdater
class LuaEditor(Editor):
def get_current_plugins(self):
return []
def load_plugin_spec(self, input_file) -> List[LuaPlugin]:
luaPackages = []
csvfilename=input_file
log.info("Loading package descriptions from %s", csvfilename)
with open(csvfilename, newline='') as csvfile:
reader = csv.DictReader(csvfile,)
for row in reader:
# name,server,version,luaversion,maintainers
plugin = LuaPlugin(**row)
luaPackages.append(plugin)
return luaPackages
def generate_nix(
self,
results: List[Tuple[LuaPlugin, str]],
outfilename: str
):
with tempfile.NamedTemporaryFile("w+") as f:
f.write(HEADER)
header2 = textwrap.dedent(
# header2 = inspect.cleandoc(
"""
{ self, stdenv, lib, fetchurl, fetchgit, callPackage, ... } @ args:
final: prev:
{
""")
f.write(header2)
for (plugin, nix_expr) in results:
f.write(f"{plugin.normalized_name} = {nix_expr}")
f.write(FOOTER)
f.flush()
# if everything went fine, move the generated file to its destination
# using copy since move doesn't work across disks
shutil.copy(f.name, outfilename)
print(f"updated {outfilename}")
@property
def attr_path(self):
return "luaPackages"
def get_update(self, input_file: str, outfile: str, config: FetchConfig):
_prefetch = generate_pkg_nix
def update() -> dict:
plugin_specs = self.load_plugin_spec(input_file)
sorted_plugin_specs = sorted(plugin_specs, key=lambda v: v.name.lower())
try:
pool = Pool(processes=config.proc)
results = pool.map(_prefetch, sorted_plugin_specs)
finally:
pass
self.generate_nix(results, outfile)
redirects = {}
return redirects
return update
def rewrite_input(self, input_file: str, *args, **kwargs):
# vim plugin reads the file before update but that shouldn't be our case
# not implemented yet
# fieldnames = ['name', 'server', 'version', 'luaversion', 'maintainers']
# input_file = "toto.csv"
# with open(input_file, newline='') as csvfile:
# writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
# writer.writeheader()
# for row in reader:
# # name,server,version,luaversion,maintainers
# plugin = LuaPlugin(**row)
# luaPackages.append(plugin)
pass
def generate_pkg_nix(plug: LuaPlugin):
'''
Generate nix expression for a luarocks package
Our cache key associates "p.name-p.version" to its rockspec
'''
log.debug("Generating nix expression for %s", plug.name)
cmd = [ "luarocks", "nix"]
if plug.maintainers:
cmd.append(f"--maintainers={plug.maintainers}")
# updates plugin directly from its repository
print("server: [%s]" % plug.server)
# if plug.server == "src":
if plug.src != "":
if plug.src is None:
msg = "src must be set when 'version' is set to \"src\" for package %s" % plug.name
log.error(msg)
raise RuntimeError(msg)
log.debug("Updating from source %s", plug.src)
cmd.append(plug.src)
# update the plugin from luarocks
else:
cmd.append(plug.name)
if plug.version and plug.version != "src":
cmd.append(plug.version)
if plug.server != "src" and plug.server:
cmd.append(f"--only-server={plug.server}")
if plug.luaversion:
with CleanEnvironment():
local_pkgs = str(ROOT.resolve())
cmd2 = ["nix-build", "--no-out-link", local_pkgs, "-A", f"{plug.luaversion}"]
log.debug("running %s", ' '.join(cmd2))
lua_drv_path=subprocess.check_output(cmd2, text=True).strip()
cmd.append(f"--lua-dir={lua_drv_path}/bin")
log.debug("running %s", ' '.join(cmd))
output = subprocess.check_output(cmd, text=True)
output = "callPackage(" + output.strip() + ") {};\n\n"
return (plug, output)
def main():
editor = LuaEditor("lua", ROOT, '',
default_in = ROOT.joinpath(PKG_LIST),
default_out = ROOT.joinpath(GENERATED_NIXFILE)
)
parser = editor.create_parser()
args = parser.parse_args()
update_plugins(editor, args)
if __name__ == "__main__":
main()
# vim: set ft=python noet fdm=manual fenc=utf-8 ff=unix sts=0 sw=4 ts=4 :
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