Manually remove trailing white spaces
in `pkgs/**.nix` with the help of an editor
Auto-generated nix expressions containing trailing whitespaces:
* pkgs/development/haskell-modules/hackage-packages.nix
* See issue https://github.com/NixOS/cabal2nix/issues/208
* pkgs/**/eggs.nix
* I don't know how they are generated,
but they seems to be Python-related.
continuation of #109595
pkgconfig was aliased in 2018, however, it remained in
all-packages.nix due to its wide usage. This cleans
up the remaining references to pkgs.pkgsconfig and
moves the entry to aliases.nix.
python3Packages.pkgconfig remained unchanged because
it's the canonical name of the upstream package
on pypi.
* trying to build emscriptenPackages not all fail
* reading the console.log it turns out python executable is not in place and that is why emconfigure didnt work
* backup commit
* much more targets are compiling now
* added common revisioning
* revision bump to 1.37.36 (not tested)
* fixed xmllint
* forcing unit testing, will implement the tests after i get home
* json_c test working
* added tests
* tiny fixes
* added documentation
