# Maintainer: xiretza <xiretza+aur@gmail.com>
# Maintainer: Rod Kay   <charlie5 on #ada at freenode.net>

pkgname=libadalang
_libadalang_ver=2020-20200429-19982
_langkit_ver=2020-20200429-19994
pkgver=2020
pkgrel=1
pkgdesc="A high performance semantic engine for the Ada programming language."

arch=('i686' 'x86_64')
url="https://github.com/AdaCore/libadalang"
license=('GPL')

depends=("gnatcoll-core" "gnatcoll-iconv" "gnatcoll-gmp")
makedepends=('gprbuild' 'python2-virtualenv' 'python2-setuptools')

_libadalang_checksum=b08f8035da44c241348f8b597dbdaf95a4d43cc7
_langkit_checksum=842969ffaa118d71e1efc466383f1c0cf663c464
source=("libadalang-$_libadalang_ver-src.tar.gz::https://community.download.adacore.com/v1/${_libadalang_checksum}?filename=libadalang-$_libadalang_ver-src.tar.gz"
        "langkit-$_langkit_ver-src.tar.gz::https://community.download.adacore.com/v1/${_langkit_checksum}?filename=langkit-$_langkit_ver-src.tar.gz")
noextract=()
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# This is an absolutely ugly hack to install all the python2 build dependencies
# (most of them have been dropped from repos and getting them into the AUR just
# for this package would be way too much effort). It works because they are
# only required for building, not at runtime - so they are fetched as sources
# and then installed in the build environment with pip (in a virtualenv).
#
# These variable assignments are generated from the libadalang REQUIREMENTS.dev
# using the attached gen_PKGBUILD_sources.sh script.
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prepare()
{
  cd "$srcdir/libadalang-$_libadalang_ver-src"
  virtualenv2 "$srcdir/venv"

  (
    source "$srcdir/venv/bin/activate"
    pip install --no-index --find-links "$srcdir" -r <(grep -v langkit REQUIREMENTS.dev)
  )
}

build() 
{
  cd "$srcdir/libadalang-$_libadalang_ver-src"

  (
    source "$srcdir/venv/bin/activate"

    export PYTHONPATH="$srcdir/langkit-$_langkit_ver-src:$PYTHONPATH"

    python2 ada/manage.py generate
    python2 ada/manage.py build --build-mode=prod --gargs="-R -cargs $CFLAGS -largs $LDFLAGS -gargs"
  )
}


package()
{
  cd "$srcdir/libadalang-$_libadalang_ver-src"

  (
    source "$srcdir/venv/bin/activate"

    export PYTHONPATH="$srcdir/langkit-$_langkit_ver-src:$PYTHONPATH"

    python2 ada/manage.py install --build-mode=prod "$pkgdir/usr"
  )

  # Install the Python binding
  # Has to happen outside virtualenv
  cd build/python
  python2 setup.py install --root="$pkgdir"

  rm -fr "$pkgdir/usr/python"

  # Fix ocaml bindings location
  mkdir -p "$pkgdir/usr/lib/ocaml/"
  mv "$pkgdir/usr/ocaml" "$pkgdir/usr/lib/ocaml/libadalang"
}