- Modify bootstrap script to reuse composerEnv from package

- Prefix package names with composer-

bootstrap.sh

@@ -1,5 +1,5 @@
 #!/bin/sh -e
 
 php ~/composer.phar install
-php bin/composer2nix
+php bin/composer2nix --composer-env src/Composer2Nix/composer-env.nix --no-copy-composer-env
 rm -Rf vendor

src/Composer2Nix/composer-env.nix

@@ -150,6 +150,7 @@ rec {
           '') (builtins.attrNames dependencies);
     in
     stdenv.lib.makeOverridable stdenv.mkDerivation (builtins.removeAttrs args [ "packages" "devPackages" ] // {
+      name = "composer-${args.name}";
       buildInputs = [ php composer ] ++ args.buildInputs or [];
       buildCommand = ''
         ${if executable then ''