* One-click installation :-)
The script nix-install-package takes a `Nix package file' (which contains one or more derivations, along with URLs of Nix caches), unpacks it, pulls the caches, and installs the derivations in the user's environment. For best results, associate the command `xterm -e /nix/bin/nix-install-package' with the MIME type `application/x-nix-package' and visit http://losser.st-lab.cs.uu.nl/~eelco/test/.
This commit is contained in:
Eelco Dolstra
parent
b857267893
commit
e7ea52d3b3
3 changed files with 117 additions and 67 deletions
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@ -1,5 +1,6 @@
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bin_SCRIPTS = nix-collect-garbage \
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nix-pull nix-push nix-prefetch-url
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nix-pull nix-push nix-prefetch-url \
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nix-install-package
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noinst_SCRIPTS = nix-profile.sh
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@ -12,8 +13,8 @@ install-exec-local:
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include ../substitute.mk
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EXTRA_DIST = nix-switch.in nix-collect-garbage.in \
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EXTRA_DIST = nix-collect-garbage.in \
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nix-pull.in nix-push.in nix-profile.sh.in \
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nix-prefetch-url.in \
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nix-prefetch-url.in nix-install-package.in \
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prebuilts.conf
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37
scripts/nix-install-package.in
Normal file
37
scripts/nix-install-package.in
Normal file
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@ -0,0 +1,37 @@
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#! /usr/bin/perl -w
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use strict;
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use POSIX qw(tmpnam);
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my $pkgfile = $ARGV[0];
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die unless defined $pkgfile;
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my $tmpdir;
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do { $tmpdir = tmpnam(); }
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until mkdir $tmpdir, 0777;
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# !!! remove tmpdir on exit
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print "unpacking $pkgfile in $tmpdir...\n";
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system "bunzip2 < $pkgfile | (cd $tmpdir && tar xf -)";
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die if $?;
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print "this package contains the following derivations:\n";
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system "nix-env -qsf $tmpdir/default.nix";
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die if $?;
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print "do you wish to install them (y/n)? ";
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my $reply = <STDIN>;
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chomp $reply;
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exit if (!($reply eq "y"));
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print "pulling caches...\n";
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system "nix-pull `cat $tmpdir/caches`";
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die if $?;
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print "installing package...\n";
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system "nix-env -i $tmpdir/default.nix '*'";
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die if $?;
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print "installing succeeded! (enter to continue)\n";
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<STDIN>;
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@ -19,86 +19,98 @@ my @sucs;
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my $fullexpr = "[";
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open CONFFILE, "<$conffile";
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while (<CONFFILE>) {
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sub processURL {
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my $url = shift;
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$url =~ s/\/$//;
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print "obtaining list of Nix archives at $url...\n";
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chomp;
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if (/^\s*(\S+)\s*(\#.*)?$/) {
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my $url = $1;
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$url =~ s/\/$//;
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print "obtaining list of Nix archives at $url...\n";
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system "wget --cache=off '$url'/MANIFEST -O '$manifest' 2> /dev/null"; # !!! escape
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if ($?) { die "`wget' failed"; }
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system "wget --cache=off '$url'/MANIFEST -O '$manifest' 2> /dev/null"; # !!! escape
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if ($?) { die "`wget' failed"; }
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open MANIFEST, "<$manifest";
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open MANIFEST, "<$manifest";
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my $inside = 0;
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my $inside = 0;
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my $storepath;
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my $narname;
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my $hash;
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my @preds;
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my $storepath;
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my $narname;
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my $hash;
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my @preds;
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while (<MANIFEST>) {
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chomp;
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s/\#.*$//g;
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next if (/^$/);
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while (<MANIFEST>) {
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chomp;
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s/\#.*$//g;
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next if (/^$/);
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if (!$inside) {
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if (/^\{$/) {
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$inside = 1;
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undef $storepath;
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undef $narname;
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undef $hash;
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@preds = ();
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if (!$inside) {
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if (/^\{$/) {
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$inside = 1;
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undef $storepath;
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undef $narname;
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undef $hash;
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@preds = ();
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}
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else { die "bad line: $_"; }
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} else {
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if (/^\}$/) {
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$inside = 0;
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my $fullurl = "$url/$narname";
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print "$storepath\n";
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else { die "bad line: $_"; }
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} else {
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if (/^\}$/) {
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$inside = 0;
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my $fullurl = "$url/$narname";
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# print "$storepath\n";
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# Construct a Nix expression that fetches and unpacks a
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# Nix archive from the network.
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my $fetch =
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"(import @datadir@/nix/corepkgs/fetchurl) " .
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"{url = $fullurl; md5 = \"$hash\"; system = \"@host@\"}";
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my $nixexpr =
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"((import @datadir@/nix/corepkgs/nar/unnar.nix) " .
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"{narFile = ($fetch); outPath = \"$storepath\"; system = \"@host@\"}) ";
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$fullexpr .= $nixexpr; # !!! O(n^2)?
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# Construct a Nix expression that fetches and unpacks a
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# Nix archive from the network.
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my $fetch =
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"(import @datadir@/nix/corepkgs/fetchurl) " .
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"{url = $fullurl; md5 = \"$hash\"; system = \"@host@\"}";
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my $nixexpr =
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"((import @datadir@/nix/corepkgs/nar/unnar.nix) " .
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"{narFile = ($fetch); outPath = \"$storepath\"; system = \"@host@\"}) ";
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$fullexpr .= $nixexpr; # !!! O(n^2)?
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push @srcpaths, $storepath;
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push @srcpaths, $storepath;
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foreach my $p (@preds) {
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push @sucs, $p;
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push @sucs, $storepath;
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}
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foreach my $p (@preds) {
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push @sucs, $p;
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push @sucs, $storepath;
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}
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}
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elsif (/^\s*StorePath:\s*(\/\S+)\s*$/) {
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$storepath = $1;
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}
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elsif (/^\s*NarName:\s*(\S+)\s*$/) {
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$narname = $1;
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}
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elsif (/^\s*MD5:\s*(\S+)\s*$/) {
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$hash = $1;
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}
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elsif (/^\s*SuccOf:\s*(\/\S+)\s*$/) {
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push @preds, $1;
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}
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else { die "bad line: $_"; }
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}
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elsif (/^\s*StorePath:\s*(\/\S+)\s*$/) {
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$storepath = $1;
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}
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elsif (/^\s*NarName:\s*(\S+)\s*$/) {
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$narname = $1;
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}
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elsif (/^\s*MD5:\s*(\S+)\s*$/) {
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$hash = $1;
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}
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elsif (/^\s*SuccOf:\s*(\/\S+)\s*$/) {
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push @preds, $1;
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}
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else { die "bad line: $_"; }
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}
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close MANIFEST;
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}
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close MANIFEST;
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}
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# Obtain URLs either from the command line or from a configuration file.
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if (scalar @ARGV > 0) {
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while (@ARGV) {
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my $url = shift @ARGV;
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processURL $url;
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}
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} else {
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open CONFFILE, "<$conffile";
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while (<CONFFILE>) {
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chomp;
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if (/^\s*(\S+)\s*(\#.*)?$/) {
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my $url = $1;
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processURL $url;
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}
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}
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close CONFFILE;
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}
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$fullexpr .= "]";
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