* Generate the scripts so that we can substitute the prefix

  etc. correctly.
* Fixed nix-switch.

1 files changed, 70 insertions, 0 deletions

diff --git a/scripts/nix-push.in b/scripts/nix-push.in
new file mode 100644
index 000000000000..bf30f3a49d7f
--- /dev/null
+++ b/scripts/nix-push.in
@@ -0,0 +1,70 @@
+#! /usr/bin/perl -w
+
+my @pushlist;
+
+foreach my $hash (@ARGV) {
+
+    die unless $hash =~ /^([0-9a-z]{32})$/;
+
+    # Get all paths referenced by the normalisation of the given 
+    # fstate expression.
+    my @paths;
+    open PATHS, "nix -qrh $hash 2> /dev/null |" or die "nix -qrh";
+    while (<PATHS>) {
+        chomp;
+        next unless /^\//;
+        push @paths, $_;
+    }
+    close PATHS;
+
+    # For each path, create a Fix expression that turns the path into
+    # a Nix archive.
+    foreach my $path (@paths) {
+
+        # Hash the path.
+        my $phash = `nix-hash $path`;
+        $? and die "nix-hash";
+        chomp $phash;
+        die unless $phash =~ /^([0-9a-z]{32})$/;
+
+        # Construct a name for the Nix archive.  If the file is an
+        # fstate successor, encode this into the name.
+        my $name = $phash;
+        if ($path =~ /-s-([0-9a-z]{32}).nix$/) {
+            $name = "$name-s-$1";
+        }
+        $name = $name . ".nar.bz2";
+
+        # Construct a Fix expression that creates a Nix archive.
+        my $fixexpr = 
+          "App(IncludeFix(\"nar/nar.fix\"), " .
+          "[ (\"path\", Path(\"$path\", Hash(\"$phash\"), [Include(\"$hash\")]))" .
+          ", (\"name\", \"$name\")" .
+          "])";
+	
+        my $fixfile = "/tmp/nix-push-tmp.fix";
+        open FIX, ">$fixfile";
+        print FIX $fixexpr;
+        close FIX;
+
+        # Instantiate a Nix expression from the Fix expression.
+        my $nhash = `fix $fixfile`;
+        $? and die "instantiating Nix archive expression";
+        chomp $nhash;
+        die unless $nhash =~ /^([0-9a-z]{32})$/;
+
+        # Realise the Nix expression.
+        my $npath = `nix -qph $nhash 2> /dev/null`;
+        $? and die "creating Nix archive";
+        chomp $npath;
+
+        push @pushlist, $npath;
+
+        print "$path -> $npath\n";
+    }
+}
+
+# Push the prebuilts to the server. !!! FIXME
+if (scalar @pushlist > 0) {
+    system "rsync -av -e ssh @pushlist eelco\@losser.st-lab.cs.uu.nl:/home/eelco/public_html/nix-dist/";
+}