pantry/projects/python.org/package.yml

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

versions:
  github: python/cpython/tags

companions:
  pip.pypa.io: '*'

unpackaged:
  - version: ^2
    platform: darwin
    arch: aarc64
    reason: help-wanted

provides:
  - bin/python
  - bin/python{{version.major}}
  - bin/python{{version.marketing}}

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
    crates.io/semverator: '*'

  #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

    # customize `pip install` locations to tea defaults
    cp props/sitecustomize.py {{prefix}}/lib/python{{version.marketing}}

    # 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

    # we provide the binaries in a separate package
    # but we don’t use --without-ensurepip because stuff expects python to
    # come bundled with setuptools
    rm pip*

    # older versions use a different config dir
    if semverator satisfies '<3.8' {{ version }}; then
      confdir=$(echo $confdir | sed -e 's/\(config-{{ version.marketing }}\)/\1m/')
    fi

    # make relocatable
    cd {{prefix}}
    for binfile in $shebangs $confdir/python-config.py; do
      binfile=$(readlink -f $binfile)
      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 }}"
      - --enable-ipv6
      - --disable-loadable-sqlite-extensions
      - --with-system-expat
      - --with-system-ffi
      - --with-system-libmpdec
      # - --enable-optimizations  # fails due to clang/llvm pkging bug on Linux
      # - --with-lto  # fails on linux/aarch64
      - --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

  # 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:
  script: |
    # Check if sqlite is ok, because we build with --enable-loadable-sqlite-extensions
    # and it can occur that building sqlite silently fails if OSX's sqlite is used.
    python -c "import sqlite3"

    # check to see if we can create a venv
    python -m venv myvenv

    # Check if some other modules import. Then the linked libs are working.
    python -c "import _ctypes"
    # python -c "import _decimal" #FIXME
    python -c "import pyexpat"
    python -c "import zlib"

    # Verify that the selected DBM interface works
    python $FIXTURE

    if which pip; then
      exit 1
    fi    
  fixture: |
    import dbm
    with dbm.ndbm.open("test", "c") as db:
        db[b"foo \\xbd"] = b"bar \\xbd"
    with dbm.ndbm.open("test", "r") as db:
        assert list(db.keys()) == [b"foo \\xbd"]
        assert b"foo \\xbd" in db
        assert db[b"foo \\xbd"] == b"bar \\xbd"