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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| import re | ||
| import subprocess | ||
| import json | ||
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| buffer = open("cabal.project").read() | ||
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| # match looks like this: | ||
|
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| # source-repository-package | ||
| # type: git | ||
| # location: https://github.com/input-output-hk/iohk-monitoring-framework | ||
| # tag: d5eb7ee92f0974aed5ac4a57a9bf5697ec065b7d | ||
| # subdir: iohk-monitoring | ||
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| # subdir is optional, so is a --sha256 comment | ||
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| pattern = r'source-repository-package.*\n' \ | ||
| + r'(?P<pad> .*)type: git.*\n' \ | ||
| + r'\1location: (?P<loc>[^ \n]+).*\n' \ | ||
| + r'\1tag: (?P<tag>[^ \n]+).*\n' \ | ||
| + r'(?P<subdir>\1subdir: [^ \n]+\n){0,1}' \ | ||
| + r'(\1--sha256:.*\n){0,1}' | ||
| # ( .*--sha256:.*\n){0,1}""" | ||
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| def repl(match): | ||
| dict = match.groupdict() | ||
| if not dict["subdir"]: | ||
| dict["subdir"] = '' | ||
| prefetchJSON = subprocess.run( | ||
| ["nix-prefetch-git", "--quiet", dict['loc'], dict['tag']], | ||
| capture_output=True, check=True).stdout | ||
| sha256 = json.loads(prefetchJSON)["sha256"] | ||
| return """source-repository-package | ||
| {pad}type: git | ||
| {pad}location: {loc} | ||
| {pad}tag: {tag} | ||
| {subdir}{pad}--sha256: {sha256} | ||
| """.format(**{**dict, **{"sha256": sha256}}) | ||
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| f = open("cabal.project",'w') | ||
| f.write(re.sub(pattern, repl, buffer, flags = re.I + re.M)) | ||
| f.close() |