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mirror-branch: Bails when failing to run nix-instantiate

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A more durable solution would likely be to make a generic function that
wraps backticks and fails when $? is non-zero, rather than doing it
in-situ. There are other backtick uses that may be problematic
This commit is contained in:
Samuel Dionne-Riel 2020-01-02 21:07:11 -05:00
parent 059ee08f5c
commit cac10f5360
1 changed files with 8 additions and 0 deletions
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8
mirror-nixos-branch.pl
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@ -76,6 +76,14 @@ print STDERR "release is ‘$releaseName’ (build $releaseId), eval is $evalId,
my @curReleaseUrl = split(/\//, read_file("$channelsDir/$channelName", err_mode => 'quiet') // ""); my @curReleaseUrl = split(/\//, read_file("$channelsDir/$channelName", err_mode => 'quiet') // "");
my $curRelease = pop @curReleaseUrl; my $curRelease = pop @curReleaseUrl;
my $d = `NIX_PATH= nix-instantiate --eval -E "builtins.compareVersions (builtins.parseDrvName \\"$curRelease\\").version (builtins.parseDrvName \\"$releaseName\\").version"`; my $d = `NIX_PATH= nix-instantiate --eval -E "builtins.compareVersions (builtins.parseDrvName \\"$curRelease\\").version (builtins.parseDrvName \\"$releaseName\\").version"`;
if ($? == -1) {
warn("could not execute nix-instantiate ($!).\n");
exit 127;
}
if ($? > 0) {
warn("error while executing nix-instantiate ($?).\n");
exit $?;
}
chomp $d; chomp $d;
if ($d == 1) { if ($d == 1) {
warn("channel would go back in time from $curRelease to $releaseName, bailing out\n"); warn("channel would go back in time from $curRelease to $releaseName, bailing out\n");