* makeWrapper: new function that transparently takes care of creating

a wrapper script.  E.g.

    wrapProgram $out/bin/prog --set FOO bar

  will create a wrapper around "prog" so that the environment variable
  FOO is set to bar.  The original program is renamed to
  $out/bin/.wrapped-prog.
  
* Function makeSetupHook to convert a script into a setup hook which
  can be included in buildInputs.  This makes it easier to use scripts
  like makeWrapper.

* Added Bazaar, yet another distributed version management system.

svn path=/nixpkgs/trunk/; revision=10211

pkgs/applications/version-management/bazaar/default.nix

@@ -0,0 +1,22 @@
+{stdenv, fetchurl, python, makeWrapper}:
+
+stdenv.mkDerivation {
+  name = "bazaar-1.1";
+
+  src = fetchurl {
+    url = file:///home/eelco/Downloads/bzr-1.1.tar.gz;
+    sha256 = "1qpkw580r22yxybdghx2ha0kyk22brbhd1kg9wwjh209dqy2gqzc";
+  };
+
+  buildInputs = [python makeWrapper];
+
+  installPhase = ''
+    python setup.py install --prefix=$out
+    wrapProgram $out/bin/bzr --prefix PYTHONPATH : "$(toPythonPath $out)"
+  '';
+
+  meta = {
+    homepage = http://bazaar-vcs.org/;
+    description = "A distributed version control system that Just Works";
+  };
+}

pkgs/build-support/make-wrapper/make-wrapper.sh

@@ -72,3 +72,11 @@ filterExisting() {
         fi
     done
 }
+
+# Syntax: wrapProgram <PROGRAM> <MAKE-WRAPPER FLAGS...>
+wrapProgram() {
+    local prog="$1"
+    local hidden="$(dirname "$prog")/.wrapped-$(basename "$prog")"
+    mv $prog $hidden
+    makeWrapper $hidden $prog "$@"
+}

pkgs/top-level/all-packages.nix

@@ -288,8 +288,15 @@ rec {
       inherit stdenv curl;
     });
 
+  makeSetupHook = script: runCommand "hook" {} ''
+    ensureDir $out/nix-support
+    cp ${script} $out/nix-support/setup-hook
+  '';
+
   makeWrapper = ../build-support/make-wrapper/make-wrapper.sh;
 
+  makeWrapperNew = makeSetupHook ../build-support/make-wrapper/make-wrapper.sh;
+
   # Run the shell command `buildCommand' to produce a store object
   # named `name'.  The attributes in `env' are added to the
   # environment prior to running the command.
@@ -3807,6 +3814,11 @@ rec {
     inherit fetchurl stdenv unzip;
   };
 
+  bazaar = import ../applications/version-management/bazaar {
+    inherit fetchurl stdenv python;
+    makeWrapper = makeWrapperNew;
+  };
+
   # commented out because it's using the new configuration style proposal which is unstable
   #biew = import ../applications/misc/biew {
   #  inherit lib stdenv fetchurl ncurses;