diff options
| author | Eric Wong <e@80x24.org> | 2023-09-13 09:12:39 +0000 |
|---|---|---|
| committer | Eric Wong <e@80x24.org> | 2023-09-14 10:06:23 +0000 |
| commit | 7682d7645f579ba531717ba95c8f3d4ff63af53f (patch) | |
| tree | 6d6bb1b43542627fd01ca35ae681336369c15b24 /install/os.perl | |
| parent | 50f041f9d2bf4988329787105769b7f04d263873 (diff) | |
| download | public-inbox-7682d7645f579ba531717ba95c8f3d4ff63af53f.tar.gz | |
deps.perl can be useful for non-CI purposes as long as it's not blindly removing packages. Thus, a --allow-remove flag now exists for CI use and removals are disabled by default. deps.perl also gets easier-to-use in that now install/os.perl is split off from from ci/profiles.perl so OS-supplied packaged manager.
Diffstat (limited to 'install/os.perl')
| -rw-r--r-- | install/os.perl | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/install/os.perl b/install/os.perl new file mode 100644 index 00000000..4fcbcbe4 --- /dev/null +++ b/install/os.perl @@ -0,0 +1,78 @@ +# Copyright (C) all contributors <meta@public-inbox.org> +# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt> + +# Helper library for detecting distro info and mapping to package manager. +# This should NOT be installed via `make install'. +# This is used by install/deps.perl and ci/profiles.perl +package PublicInbox::InstallOS; +use v5.12; +use parent qw(Exporter); +our ($ID, $PRETTY_NAME, $VERSION_ID); # same vars as os-release(5) +our @EXPORT = qw($ID $VERSION_ID pkg_fmt); + +my ($release, $version); # from uname +if ($^O eq 'linux') { # try using os-release(5) + for my $f (qw(/etc/os-release /usr/lib/os-release)) { + next unless -f $f; + my @echo = map { + qq{echo "\$"$_" = qq[\$$_];"; } + } qw(ID PRETTY_NAME VERSION_ID); + # rely on sh(1) to handle interpolation and such: + my $vars = `sh -c '. $f; @echo'`; + die "sh \$?=$?" if $?; + eval $vars; + die $@ if $@; + $VERSION_ID //= ''; + $ID //= ''; + if ($ID eq 'debian' && $VERSION_ID eq '') { + if ($PRETTY_NAME =~ m!/sid\z!) { + $VERSION_ID = 'sid'; + } else { + open my $fh, '<', $f or die "open($f): $!"; + my $msg = do { local $/; <$fh> }; + die <<EOM; +ID=$ID, but no VERSION_ID +==> $f <== +$msg +EOM + } + } + last if $ID ne '' && $VERSION_ID ne ''; + } + $ID = 'linux' if $ID eq ''; # cf. os-release(5) +} elsif ($^O =~ m!\A(?:free|net|open)bsd\z!) { # TODO: net? dragonfly? + $ID = $^O; + require POSIX; + (undef, undef, $release, $version) = POSIX::uname(); + $VERSION_ID = lc $release; + $VERSION_ID =~ s/[^0-9a-z\.\_\-]//sg; # cf. os-release(5) +} else { # only support POSIX-like and Free systems: + die "$^O unsupported"; +} +$VERSION_ID //= 0; # numeric? could be 'sid', actually... +my %MIN_VER = (freebsd => v11, openbsd => v7.3, netbsd => v9.3); + +if (defined(my $min_ver = $MIN_VER{$^O})) { + my $vid = $VERSION_ID; + $vid =~ s/-.*\z//s; # no dashes in v-strings + my $vstr = eval "v$vid"; + die "can't convert VERSION_ID=$VERSION_ID to v-string" if $@; + die <<EOM if $vstr lt $min_ver; +ID=$ID VERSION_ID=$VERSION_ID release=$release ($version) too old to support +EOM +} + +sub pkg_fmt () { + if ($ID eq 'freebsd') { 'pkg' } + # *shrug*, as long as the (Net|Open)BSD names don't conflict w/ FreeBSD + elsif ($ID eq 'netbsd') { 'pkgin' } + elsif ($ID eq 'openbsd') { 'pkg_add' } + elsif ($ID =~ m!\A(?:debian|ubuntu)\z!) { 'deb' } + elsif ($ID =~ m!\A(?:centos|redhat|fedora)\z!) { 'rpm' } + else { warn "PKG_FMT undefined for ID=$ID"; undef } +} + +package main; +PublicInbox::InstallOS->import; + +1; |