* A garbage collector for installed packages. nix-collect-garbage
doesn't actually delete any packages, it just prints their descriptor hashes. So we can do nix info $(nix-collect-garbage) to print out the ids of the packages that would be deleted, and nix delpkg $(nix-collect-garbage) to actually delete them.
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2 changed files with 23 additions and 1 deletions
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bin_SCRIPTS = nix-generate-regscript nix-switch
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bin_SCRIPTS = nix-generate-regscript nix-switch nix-collect-garbage
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install-exec-local:
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install-exec-local:
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$(INSTALL) -d $(sysconfdir)/profile.d
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$(INSTALL) -d $(sysconfdir)/profile.d
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22
scripts/nix-collect-garbage
Executable file
22
scripts/nix-collect-garbage
Executable file
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#! /usr/bin/perl -w
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my $prefix = $ENV{"NIX"} || "/nix"; # !!! use prefix
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my $linkdir = "$prefix/var/nix/links";
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my %alive;
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open HASHES, "nix closure \$(cat $linkdir/*.hash) |";
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while (<HASHES>) {
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chomp;
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$alive{$_} = 1;
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}
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close HASHES;
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open HASHES, "nix listinst |";
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while (<HASHES>) {
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chomp;
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if (!$alive{$_}) {
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print "$_\n";
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}
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}
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close HASHES;
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