php: Make all arguments to a PHP build overridable

Make all arguments to a PHP build overridable; i.e, both configuration
flags, such as valgrindSupport, and packages, such as valgrind:

php.override { valgrindSupport = false; valgrind = valgrind-light; }

This applies to packages built by generic and buildEnv/withExtensions;
i.e, it works with both phpXX and phpXXBase packages.

The following changes were also made to facilitate this:

 - generic and generic' are merged into one function

 - generic now takes all required arguments for a complete build and
   is meant to be called by callPackage

 - The main function called from all-packages.nix no longer takes all
   required arguments for a complete build - all arguments passed to it
   are however forwarded to the individual builds, thus default
   arguments can still be overridden from all-packages.nix

0 files changed, 0 insertions, 0 deletions