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linux_lqx, linux_zen: avoid unnecessary prefetch

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If the version hasn't changed, there is no need to run nix_prefetch_git
(which is quite expensive for the large kernel repo).
This commit is contained in:
Michael Adler 2022-07-06 08:30:41 +02:00
parent e25d5905ec
commit 168cdcd9bd
1 changed files with 27 additions and 2 deletions
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29
pkgs/os-specific/linux/kernel/update-zen.py
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@ -78,6 +78,29 @@ def update_file(relpath, variant, version, suffix, sha256):
print(result, end='')
def read_file(relpath, variant):
file_path = os.path.join(DIR, relpath)
re_version = re.compile(fr'^\s*version = "(.+)"; #{variant}')
re_suffix = re.compile(fr'^\s*suffix = "(.+)"; #{variant}')
version = None
suffix = None
with fileinput.FileInput(file_path, mode='r') as f:
for line in f:
version_match = re_version.match(line)
if version_match:
version = version_match.group(1)
continue
suffix_match = re_suffix.match(line)
if suffix_match:
suffix = suffix_match.group(1)
continue
if version and suffix:
break
return version, suffix
if __name__ == "__main__":
if len(sys.argv) == 1:
panic("Update variant expected")
@ -93,5 +116,7 @@ if __name__ == "__main__":
zen_version = zen_match.group(1)
zen_suffix = zen_match.group(2)
break
zen_hash = nix_prefetch_git('https://github.com/zen-kernel/zen-kernel.git', zen_tag)
update_file('zen-kernels.nix', variant, zen_version, zen_suffix, zen_hash)
old_version, old_suffix = read_file('zen-kernels.nix', variant)
if old_version != zen_version or old_suffix != zen_suffix:
zen_hash = nix_prefetch_git('https://github.com/zen-kernel/zen-kernel.git', zen_tag)
update_file('zen-kernels.nix', variant, zen_version, zen_suffix, zen_hash)