nixpkgs-immich/pkgs/build-support/dlang/dub-to-nix/dub-to-nix.py
2024-09-17 10:23:40 -06:00

72 lines
2.9 KiB
Python

#!/usr/bin/env python3
import sys
import json
import os
import subprocess
import string
def eprint(text: str):
print(text, file=sys.stderr)
if not os.path.exists("dub.selections.json"):
eprint("The file `dub.selections.json` does not exist in the current working directory")
eprint("run `dub upgrade --annotate` to generate it")
sys.exit(1)
with open("dub.selections.json") as f:
selectionsJson = json.load(f)
depsDict: dict = selectionsJson["versions"]
# For each dependency expand non-expanded version into a dict with a "version" key
depsDict = {pname: (versionOrDepDict if isinstance(versionOrDepDict, dict) else {"version": versionOrDepDict}) for (pname, versionOrDepDict) in depsDict.items()}
# Don't process path-type selections
depsDict = {pname: depDict for (pname, depDict) in depsDict.items() if "path" not in depDict}
# Pre-validate selections before trying to fetch
for pname in depsDict:
depDict = depsDict[pname]
version = depDict["version"]
if version.startswith("~"):
eprint(f'Expected version of "{pname}" to be non-branch type')
eprint(f'Found: "{version}"')
eprint("Please specify a non-branch version inside `dub.selections.json`")
eprint("When packaging, you might also need to patch the version value in the appropriate places (`dub.selections.json`, dub.sdl`, `dub.json`)")
sys.exit(1)
if "repository" in depDict:
repository = depDict["repository"]
if not repository.startswith("git+"):
eprint(f'Expected repository field of "{pname}" to begin with "git+"')
eprint(f'Found: "{repository}"')
sys.exit(1)
if (len(version) < 7 or len(version) > 40 or not all(c in string.hexdigits for c in version)):
eprint(f'Expected version field of "{pname}" to begin be a valid git revision')
eprint(f'Found: "{version}"')
sys.exit(1)
lockedDepsDict: dict[str, dict[str, str]] = {}
for pname in depsDict:
depDict = depsDict[pname]
version = depDict["version"]
if "repository" in depDict:
repository = depDict["repository"]
strippedRepo = repository[4:]
eprint(f"Fetching {pname}@{version} ({strippedRepo})")
command = ["nix-prefetch-git", strippedRepo, version]
rawRes = subprocess.run(command, check=True, text=True, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL).stdout
sha256 = json.loads(rawRes)["sha256"]
lockedDepsDict[pname] = {"version": version, "repository": repository, "sha256": sha256}
else:
eprint(f"Fetching {pname}@{version}")
url = f"https://code.dlang.org/packages/{pname}/{version}.zip"
command = ["nix-prefetch-url", "--type", "sha256", url]
sha256 = subprocess.run(command, check=True, text=True, stdout=subprocess.PIPE, stderr=subprocess.DEVNULL).stdout.rstrip()
lockedDepsDict[pname] = {"version": version, "sha256": sha256}
print(json.dumps({"dependencies": lockedDepsDict}, indent=2))