aa8fda4b54
build action for `system' packages (like system.fix) that have
dependencies on all packages we want to activate.
So the command sequence to switch to a new activation configuration
of the system would be:
$ fix -i .../fixdescriptors/system.fix
...
system.fix -> 89cf4713b37cc66989304abeb9ea189f
$ nix-switch 89cf4713b37cc66989304abeb9ea189f
* A nix-profile.sh script that can be included in .bashrc.
59 lines
1.2 KiB
Perl
Executable file
59 lines
1.2 KiB
Perl
Executable file
#! /usr/bin/perl -w
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use strict;
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use Cwd;
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my $selfdir = cwd;
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my @dirs = ("bin", "sbin", "lib", "include");
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# Create the subdirectories.
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mkdir $selfdir;
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foreach my $dir (@dirs) {
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mkdir "$selfdir/$dir";
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}
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# For each activated package, create symlinks.
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sub createLinks {
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my $srcdir = shift;
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my $dstdir = shift;
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my @srcfiles = glob("$srcdir/*");
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foreach my $srcfile (@srcfiles) {
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my $basename = $srcfile;
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$basename =~ s/^.*\///g; # strip directory
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my $dstfile = "$dstdir/$basename";
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if (-d $srcfile) {
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# !!! hack for resolving name clashes
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if (!-e $dstfile) {
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mkdir($dstfile) or
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die "error creating directory $dstfile";
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}
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-d $dstfile or die "$dstfile is not a directory";
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createLinks($srcfile, $dstfile);
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} elsif (-l $dstfile) {
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my $target = readlink($dstfile);
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die "collission between $srcfile and $target";
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} else {
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print "linking $dstfile to $srcfile\n";
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symlink($srcfile, $dstfile) or
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die "error creating link $dstfile";
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}
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}
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}
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foreach my $name (keys %ENV) {
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next unless ($name =~ /^act.*$/);
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my $pkgdir = $ENV{$name};
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print "merging $pkgdir\n";
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foreach my $dir (@dirs) {
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createLinks("$pkgdir/$dir", "$selfdir/$dir");
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}
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}
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