* Nix expression for building Hydra.

release.nix

@@ -0,0 +1,76 @@
+let
+
+
+  jobs = rec {
+
+
+    tarball =
+      { hydraSrc ? {path = ./.; rev = 1234;}
+      , nixpkgs ? {path = ../nixpkgs;}
+      , officialRelease ? false
+      }:
+
+      with import nixpkgs.path {};
+
+      releaseTools.makeSourceTarball {
+        name = "hydra-tarball";
+        src = hydraSrc;
+        inherit officialRelease;
+
+        # Since we don't have a `make dist', just tar everything.
+        distPhase = ''
+          releaseName=hydra-0.1$VERSION_SUFFIX;
+          ensureDir $out/tarballs
+          mkdir ../$releaseName
+          cp -prd . ../$releaseName
+          cd ..
+          tar cfj $out/tarballs/$releaseName.tar.bz2 $releaseName
+          tar cfz $out/tarballs/$releaseName.tar.gz $releaseName
+        '';
+      };
+
+
+    build = 
+      { tarball ? {path = jobs.tarball {};}
+      , nixpkgs ? {path = ../nixpkgs;}
+      , system ? "i686-linux"
+      }:
+
+      with import nixpkgs.path {inherit system;};
+
+      stdenvNew.mkDerivation {
+        name = "hydra-build";
+
+        buildInputs = [
+          perl makeWrapper
+          perlCatalystDevel
+          perlCatalystPluginAuthenticationStoreDBIC
+          perlCatalystPluginSessionStoreFastMmap
+          perlCatalystPluginStackTrace
+          perlCatalystPluginAuthenticationStoreDBIxClass
+          perlCatalystViewTT
+        ];
+
+        preUnpack = ''
+          src=$(ls ${tarball.path}/tarballs/*.tar.bz2)
+        ''; # */
+
+        installPhase = ''
+          ensureDir $out/libexec
+          cp -prd src/Hydra $out/libexec/hydra
+
+          mv $out/libexec/hydra/script $out/bin
+
+          for i in $out/bin/*; do
+              wrapProgram $i \
+                  --prefix PERL5LIB ':' $out/libexec/hydra/lib:$PERL5LIB \
+                  --prefix PATH ':' $out/bin \
+                  --set HYDRA_HOME $out/libexec/hydra
+          done
+        ''; # */
+      };
+
+  };
+
+
+in jobs

src/Hydra/script/hydra_build.pl

@@ -1,4 +1,4 @@
-#! @perl@ -w
+#! /var/run/current-system/sw/bin/perl -w
 
 use strict;
 use File::Basename;

src/Hydra/script/hydra_queue_runner.pl

@@ -1,4 +1,4 @@
-#! @perl@ -w
+#! /var/run/current-system/sw/bin/perl -w
 
 use strict;
 use Cwd;
@@ -100,7 +100,7 @@ sub checkBuilds {
                     open LOG, ">$logfile" or die "cannot create logfile $logfile";
                     POSIX::dup2(fileno(LOG), 1) or die;
                     POSIX::dup2(fileno(LOG), 2) or die;
-                    exec("perl", "-I$hydraHome/lib", "-w", "$ENV{'HYDRA_HOME'}/programs/Build.pl", $id);
+                    exec("hydra_build.pl", $id);
                 };
                 warn "cannot start build $id: $@";
                 POSIX::_exit(1);

src/Hydra/script/hydra_scheduler.pl

@@ -1,4 +1,4 @@
-#! @perl@ -w
+#! /var/run/current-system/sw/bin/perl -w
 
 use strict;
 use XML::Simple;