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Make latest version detection portable #682

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merged 1 commit into from Jan 1, 2024

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@smortex smortex commented Jan 1, 2024

This is currently broken on FreeBSD do to the usage of GNU-grep specific
grep(1) flag: -P.

We can use a single sed(1) command with an extended regular expression
to achieve the same goal, so use this instead.

This is currently broken on FreeBSD do to the usage of GNU-grep specific
grep(1) flag: `-P`.

We can use a single sed(1) command with an extended regular expression
to achieve the same goal, so use this instead.
@smortex smortex added the bug Something isn't working label Jan 1, 2024
@smortex smortex marked this pull request as ready for review January 1, 2024 22:21
@@ -220,7 +220,7 @@
$latest_version = join([
"${pip_install} ${legacy_resolver} ${pypi_index} ${pypi_extra_index} ${proxy_flag}",
" ${install_args} ${install_editable} ${real_pkgname}==notreallyaversion 2>&1",
' | grep -oP "\(from versions: .*\)" | sed -E "s/\(from versions: (.*?, )*(.*)\)/\2/g"',
" | sed -nE 's/.*\\(from versions: (.*, )*(.*)\\)/\\2/p'",
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  1. -n prevent output by default (this allows us to skip grep(1) which was used to only process the line matching 'from versions';
  2. The removed ? repetition char (0 or 1) was bogus after the * repetition char (0 or any number), so drop it;
  3. the g flag is used to replace each occurrences, but we can only have a single match on a line, to remove it and add the p flag to print the result of the substitution which is not done automatically because of 1. above.

@smortex smortex merged commit 2f16b92 into master Jan 1, 2024
34 checks passed
@smortex smortex deleted the portable-latest-version-detection branch January 1, 2024 23:01
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