distributable:
  url: https://www.python.org/ftp/python/{{ version }}/Python-{{ version }}.tar.xz
  strip-components: 1

versions:
  github: python/cpython/tags

companions:
  pip.pypa.io: '*'

provides:
  - bin/python
  - bin/python3  #FIXME this is only true of python 3

interprets:
  extensions: py
  args: python

dependencies:
# recommended (but none are actually required)
  zlib.net: 1
  sourceware.org/bzip2: 1
  openssl.org: ^1.1
  sourceware.org/libffi: 3
  libexpat.github.io: 2
  bytereef.org/mpdecimal: 2
  tukaani.org/xz: 5
  sqlite.org: 3
  gnu.org/readline: 8
  invisible-island.net/ncurses: 6

build:
  dependencies:
    tea.xyz/gx/cc: c99
    tea.xyz/gx/make: '*'
    freedesktop.org/pkg-config: ^0.29

  #TODO use the diff
  #TODO $libdir/_sysconfigdata__darwin_darwin.py contains non-relocatable paths
  script: |
    sed -i.bak -e 's|system_lib_dirs = .*|system_lib_dirs = os.getenv("LIBRARY_PATH").split(":")|' ./setup.py
    sed -i.bak -e 's|system_include_dirs = .*|system_include_dirs = os.getenv("CPATH").split(":")|' ./setup.py

    ./configure $ARGS
    make --jobs {{ hw.concurrency }}
    make install

    # provide unversioned symlinks
    cd {{prefix}}/bin
    for x in python idle pydoc; do
      ln -sf ${x}{{ version.marketing }} $x
    done
    ln -sf python{{ version.marketing }}-config python-config

    # make relocatable
    cd {{prefix}}
    for binfile in $shebangs $confdir/python-config.py; do
      sed -i.bak -e 's|#!{{ prefix }}/bin/|#!/usr/bin/env |g' $binfile
      rm $binfile.bak
    done

    sed -i.bak -e 's|{{ prefix }}|\\$(shell tea --prefix)/python.org/v{{version.major}}|g' $confdir/Makefile
    rm $confdir/Makefile.bak

  env:
    ARGS:
      - --prefix="{{ prefix }}"
      # it’s 202x
      - --enable-ipv6
      # prevent auto updates -> we control that
      - --without-ensurepip
      - --disable-loadable-sqlite-extensions
      # use our libraries not the bundled ones
      - --with-system-expat
      - --with-system-ffi
      - --with-system-libmpdec
      # these two make our binary not portable
      #- --enable-optimizations
      #- --with-lto
      # on macOS we want an option that is instead --enable-framework
      - --enable-shared
    libdir:
      lib/python{{version.marketing}}
    darwin:
      confdir:
        $libdir/config-{{version.marketing}}-darwin
    linux:
      ARCH: ${{hw.arch}}
      confdir:
        $libdir/config-{{version.marketing}}-${ARCH/-/_}-linux-gnu
    shebangs:
      - bin/2to3-{{version.marketing}}
      - bin/idle{{version.marketing}}
      - bin/pydoc{{version.marketing}}
      - bin/python{{version.marketing}}-config

    OPENSSL_INCLUDES: ${{ deps.openssl.org.prefix }}/include
    OPENSSL_LDFLAGS: -L{{ deps.openssl.org.prefix }}/lib

    #FIXME we should get the include path from the ncurses `.pc` files
    CPATH: ${{ deps.invisible-island.net/ncurses.prefix }}/include/ncursesw:$CPATH

  # required for `setup.py` which is used to detect the libs for python’s modules
  diff: |
    diff --git a/setup.py b/setup.py
    index 85a2b26..4f2f742 100644
    --- a/setup.py
    +++ b/setup.py
    @@ -847,8 +847,8 @@ class PyBuildExt(build_ext):
                add_dir_to_list(self.compiler.include_dirs,
                                sysconfig.get_config_var("INCLUDEDIR"))

    -        system_lib_dirs = ['/lib64', '/usr/lib64', '/lib', '/usr/lib']
    -        system_include_dirs = ['/usr/include']
    +        system_lib_dirs = os.getenv("LIBRARY_PATH").split(":")
    +        system_include_dirs = os.getenv("CPATH").split(":")
            # lib_dirs and inc_dirs are used to search for files;
            # if a file is found in one of those directories, it can
            # be assumed that no additional -I,-L directives are needed.

test:
  #TODO test all modules eg zlib module
  script: |
    python --version