45 lines
2.1 KiB
Bash
45 lines
2.1 KiB
Bash
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#!/usr/bin/env bash
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# libcap-ng: the python-capng sub-package cannot work, whatever it costs.
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#
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# The wheel is built by the HOST's python 3.13 and carries a cpython-313 ABI
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# tag; Arch ships python 3.14. No destination makes it importable on the
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# target -- the same reason python-brotli and python-libseccomp were dropped.
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# Stage 2 builds it against the port's own python, where the tag matches.
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#
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# THE COST ARGUMENT IS NOT THE REASON, and that distinction is worth keeping.
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# python-brotli was dropped when the repository held forty packages and
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# `python` dragged libffi, mpdecimal and gdbm in behind it. Measured again at
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# 131 packages, python costs three: the closure had filled in around it. So
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# the cheap-versus-expensive reasoning that was right then is wrong now, and
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# reusing it here would have been reasoning from a stale measurement.
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#
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# What has not changed is the ABI. That is why this one goes.
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#
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# build() still builds the wheel -- one function for every sub-package -- and
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# the result is simply not packaged. package_python-capng() stays in the file,
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# uncalled, like package_libquadmath() in gcc.
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set -euo pipefail
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python3 - <<'PY'
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import io, re, sys
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s = io.open("PKGBUILD", encoding="utf-8").read()
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m = re.search(r"pkgname=\((.*?)\)\n", s, re.S)
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assert m, "libcap-ng: pkgname array not found"
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names = re.findall(r"[A-Za-z0-9._+-]+", m.group(1))
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assert "python-capng" in names, "libcap-ng: python-capng not in pkgname, found %s" % names
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kept = [n for n in names if n != "python-capng"]
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s = s[:m.start()] + "pkgname=(\n" + "".join(" %s\n" % n for n in kept) + ")\n" + s[m.end():]
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io.open("PKGBUILD", "w", encoding="utf-8").write(s)
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PY
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python3 - <<'PY'
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import io, re, sys
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s = io.open("PKGBUILD", encoding="utf-8").read()
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m = re.search(r"pkgname=\((.*?)\)\n", s, re.S)
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if not m:
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sys.exit("libcap-ng: pkgname array unreadable after patching")
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names = re.findall(r"[A-Za-z0-9._+-]+", m.group(1))
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if "python-capng" in names:
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sys.exit("libcap-ng: python-capng still declared in pkgname")
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print("libcap-ng: pkgname -> %s" % " ".join(names))
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PY
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echo "libcap-ng: python-capng dropped (cp313 wheel, Arch ships python 3.14)"
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