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improve error message when no hash is found

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This commit is contained in:
figsoda 2023-03-25 22:16:09 -04:00
parent 295cc390fa
commit cb0edae277
1 changed files with 6 additions and 1 deletions
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7
nix_update/update.py
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@ -3,6 +3,7 @@ import json
import re
import shutil
import subprocess
import sys
import tempfile
import tomllib
from concurrent.futures import ThreadPoolExecutor
@ -90,6 +91,7 @@ def nix_prefetch(opts: Options, attr: str) -> str:
extra_env: Dict[str, str] = {}
tempdir: Optional[tempfile.TemporaryDirectory[str]] = None
stderr = ""
if extra_env.get("XDG_RUNTIME_DIR") is None:
tempdir = tempfile.TemporaryDirectory()
extra_env["XDG_RUNTIME_DIR"] = tempdir.name
@ -117,7 +119,10 @@ def nix_prefetch(opts: Options, attr: str) -> str:
tempdir.cleanup()
if got == "":
raise UpdateError(f"empty hash when trying to update {opts.attribute}.{attr}")
print(stderr, file=sys.stderr)
raise UpdateError(
f"failed to retrieve hash when trying to update {opts.attribute}.{attr}"
)
else:
return got