ab42bf1dab
The .nixpkg file format is extended to optionally include the URL of a binary cache, which will be used in preference to the manifest URL (which can be set to a non-existent value).
155 lines
3.8 KiB
Text
Executable file
155 lines
3.8 KiB
Text
Executable file
#! @perl@ -w @perlFlags@
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use strict;
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use File::Temp qw(tempdir);
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use Nix::Config;
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sub usageError {
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print STDERR <<EOF;
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Usage: nix-install-package (FILE | --url URL)
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Install a Nix Package (.nixpkg) either directly from FILE or by
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downloading it from URL.
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Flags:
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--profile / -p LINK: install into the specified profile
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--non-interactive: don't run inside a new terminal
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EOF
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; # '
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exit 1;
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}
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# Parse the command line arguments.
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my @args = @ARGV;
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usageError if scalar @args == 0;
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my $source;
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my $fromURL = 0;
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my @extraNixEnvArgs = ();
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my $interactive = 1;
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while (scalar @args) {
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my $arg = shift @args;
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if ($arg eq "--help") {
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usageError;
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}
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elsif ($arg eq "--url") {
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$fromURL = 1;
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}
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elsif ($arg eq "--profile" || $arg eq "-p") {
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my $profile = shift @args;
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usageError if !defined $profile;
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push @extraNixEnvArgs, "-p", $profile;
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}
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elsif ($arg eq "--non-interactive") {
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$interactive = 0;
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}
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else {
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$source = $arg;
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}
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}
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usageError unless defined $source;
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# Re-execute in a terminal, if necessary, so that if we're executed
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# from a web browser, the user gets to see us.
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if ($interactive && !defined $ENV{"NIX_HAVE_TERMINAL"}) {
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$ENV{"NIX_HAVE_TERMINAL"} = "1";
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$ENV{"LD_LIBRARY_PATH"} = "";
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foreach my $term ("xterm", "konsole", "gnome-terminal", "xterm") {
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exec($term, "-e", "$Nix::Config::binDir/nix-install-package", @ARGV);
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}
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die "cannot execute `xterm'";
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}
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my $tmpDir = tempdir("nix-install-package.XXXXXX", CLEANUP => 1, TMPDIR => 1)
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or die "cannot create a temporary directory";
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sub barf {
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my $msg = shift;
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print "$msg\n";
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<STDIN> if $interactive;
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exit 1;
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}
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# Download the package description, if necessary.
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my $pkgFile = $source;
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if ($fromURL) {
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$pkgFile = "$tmpDir/tmp.nixpkg";
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system("@curl@", "--silent", $source, "-o", $pkgFile) == 0
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or barf "curl failed: $?";
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}
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# Read and parse the package file.
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open PKGFILE, "<$pkgFile" or barf "cannot open `$pkgFile': $!";
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my $contents = <PKGFILE>;
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close PKGFILE;
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my $urlRE = "(?: [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']+ )";
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my $nameRE = "(?: [A-Za-z0-9\+\-\.\_\?\=]+ )"; # see checkStoreName()
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my $systemRE = "(?: [A-Za-z0-9\+\-\_]+ )";
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my $pathRE = "(?: \/ [\/A-Za-z0-9\+\-\.\_\?\=]* )";
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# Note: $pathRE doesn't check that whether we're looking at a valid
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# store path. We'll let nix-env do that.
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$contents =~
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/ ^ \s* (\S+) \s+ ($urlRE) \s+ ($nameRE) \s+ ($systemRE) \s+ ($pathRE) \s+ ($pathRE) ( \s+ ($urlRE) )? /x
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or barf "invalid package contents";
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my $version = $1;
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my $manifestURL = $2;
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my $drvName = $3;
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my $system = $4;
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my $drvPath = $5;
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my $outPath = $6;
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my $binaryCacheURL = $8;
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barf "invalid package version `$version'" unless $version eq "NIXPKG1";
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if ($interactive) {
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# Ask confirmation.
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print "Do you want to install `$drvName' (Y/N)? ";
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my $reply = <STDIN>;
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chomp $reply;
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exit if $reply ne "y" && $reply ne "Y";
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}
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if (defined $binaryCacheURL) {
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push @extraNixEnvArgs, "--option", "binary-caches", $binaryCacheURL;
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} else {
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# Store the manifest in the temporary directory so that we don't
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# pollute /nix/var/nix/manifests. This also requires that we
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# don't use the Nix daemon (because otherwise
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# download-using-manifests won't see our NIX_MANIFESTS_DIRS
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# environment variable).
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$ENV{NIX_MANIFESTS_DIR} = $tmpDir;
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$ENV{NIX_REMOTE} = "";
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print "\nPulling manifests...\n";
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system("$Nix::Config::binDir/nix-pull", $manifestURL) == 0
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or barf "nix-pull failed: $?";
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}
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print "\nInstalling package...\n";
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system("$Nix::Config::binDir/nix-env", "--install", $outPath, "--force-name", $drvName, @extraNixEnvArgs) == 0
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or barf "nix-env failed: $?";
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if ($interactive) {
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print "\nInstallation succeeded! Press Enter to continue.\n";
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<STDIN>;
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}
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