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* nix-install-package: Use the new (trivial) package format generated

Browse source 
by the build farm.  See e.g.,
  http://catamaran.labs.cs.uu.nl/dist/nixpkgs-0.8/nixpkgs-0.7pre2302/;
  the user can click on packages, and they will be installed (assuming
  the `application/nix-package' MIME type has been associated with
  `nix-install-package').

  Nix expressions are no longer involved: a "package" is just a
  pointer to a manifest, and the top-level store derivation to be
  added to the user environment.  This makes these packages
  independent from Nix expression evolution.

  Note that we install the store derivation ($drvPath), not the
  resulting output path ($outPath).  This is equivalent, except that
  installing the derivation maintains the back-link from the output
  path to the derivation that built it.  This is useful for
  maintenance.

* Automatically re-exec in an xterm so that the user sees something
  when `nix-install-package' is run from a browser.
This commit is contained in:
Eelco Dolstra 2005-02-25 15:42:52 +00:00
parent 3259ae5811
commit 6bafeafb88
1 changed files with 34 additions and 21 deletions
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55
scripts/nix-install-package.in
View file

@ -3,35 +3,48 @@
use strict;
use POSIX qw(tmpnam);
my $pkgfile = $ARGV[0];
die unless defined $pkgfile;
my $pkgFile = $ARGV[0];
die unless defined $pkgFile;
my $tmpdir;
do { $tmpdir = tmpnam(); }
until mkdir $tmpdir, 0777;
# !!! remove tmpdir on exit
# Re-execute in a terminal, if necessary, so that if we're executed
# from a web browser, the user gets to see us.
if (!defined $ENV{"NIX_HAVE_TERMINAL"}) {
$ENV{"NIX_HAVE_TERMINAL"} = "1";
exec("xterm", "-e", "@bindir@/nix-install-package", "$pkgFile");
die "cannot execute `xterm'";
}
print "Unpacking $pkgfile in $tmpdir...\n";
system "bunzip2 < $pkgfile | (cd $tmpdir && tar xf -)";
die if $?;
print "This package contains the following derivations:\n";
system "@bindir@/nix-env -qasf $tmpdir/default.nix";
die if $?;
# Read and parse the package file.
open PKGFILE, "<$pkgFile" or die "cannot open `$pkgFile': $!";
my $contents = <PKGFILE>;
close PKGFILE;
print "Do you wish to install these (Y/N)? ";
$contents =~ /^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)/ or die "invalid package contents";
my $version = $1;
my $manifestURL = $2;
my $drvName = $3;
my $system = $4;
my $drvPath = $5;
my $outPath = $6;
die "invalid package version `$version'" unless $version eq "NIXPKG1";
# Ask confirmation.
print "Do you want to install `$drvName' (Y/N)? ";
my $reply = <STDIN>;
chomp $reply;
exit if (!($reply eq "y"));
exit if $reply ne "y" && $reply ne "Y";
print "Pulling caches...\n";
system "@bindir@/nix-pull `cat $tmpdir/caches`";
die if $?;
print "\nPulling manifests...\n";
system "@bindir@/nix-pull '$manifestURL'";
die if $? != 0;
print "Installing package...\n";
system "@bindir@/nix-env -if $tmpdir/default.nix '*'";
die if $?;
print "\nInstalling package...\n";
system "@bindir@/nix-env -i '$drvPath'";
die if $? != 0;
print "Installation succeeded! Press Enter to continue.\n";
print "\nInstallation succeeded! Press Enter to continue.\n";
<STDIN>;