Merge pull request #232608 from emilytrau/minimal-bash

{ lib

, derivationWithMeta

, fetchurl

, kaem

, tinycc

, gnumake

, gnupatch

, coreutils

, mescc-tools-extra

, bash_2_05

}:

let

  pname = "bash";

  version = "2.05b";

  src = fetchurl {

    url = "mirror://gnu/bash/bash-${version}.tar.gz";

    sha256 = "1r1z2qdw3rz668nxrzwa14vk2zcn00hw7mpjn384picck49d80xs";

  };

  # Thanks to the live-bootstrap project!

  # See https://github.com/fosslinux/live-bootstrap/blob/1bc4296091c51f53a5598050c8956d16e945b0f5/sysa/bash-2.05b/bash-2.05b.kaem

  liveBootstrap = "https://github.com/fosslinux/live-bootstrap/raw/1bc4296091c51f53a5598050c8956d16e945b0f5/sysa/bash-2.05b";

  main_mk = fetchurl {

    url = "${liveBootstrap}/mk/main.mk";

    sha256 = "0hj29q3pq3370p18sxkpvv9flb7yvx2fs96xxlxqlwa8lkimd0j4";

  };

  common_mk = fetchurl {

    url = "${liveBootstrap}/mk/common.mk";

    sha256 = "09rigxxf85p2ybnq248sai1gdx95yykc8jmwi4yjx389zh09mcr8";

  };

  builtins_mk = fetchurl {

    url = "${liveBootstrap}/mk/builtins.mk";

    sha256 = "0939dy5by1xhfmsjj6w63nlgk509fjrhpb2crics3dpcv7prl8lj";

  };

  patches = [

    # mes libc does not have locale support

    (fetchurl {

      url = "${liveBootstrap}/patches/mes-libc.patch";

      sha256 = "0zksdjf6zbb3p4hqg6plq631y76hhhgab7kdvf7cnpk8bcykn12z";

    })

    # int name, namelen; is wrong for mes libc, it is char* name, so we modify tinycc

    # to reflect this.

    (fetchurl {

      url = "${liveBootstrap}/patches/tinycc.patch";

      sha256 = "042d2kr4a8klazk1hlvphxr6frn4mr53k957aq3apf6lbvrjgcj2";

    })

    # add ifdef's for features we don't want

    (fetchurl {

      url = "${liveBootstrap}/patches/missing-defines.patch";

      sha256 = "1q0k1kj5mrvjkqqly7ki5575a5b3hy1ywnmvhrln318yh67qnkj4";

    })

    # mes libc + setting locale = not worky

    (fetchurl {

      url = "${liveBootstrap}/patches/locale.patch";

      sha256 = "1p1q1slhafsgj8x4k0dpn9h6ryq5fwfx7dicbbxhldbw7zvnnbx9";

    })

    # We do not have /dev at this stage of the bootstrap, including /dev/tty

    (fetchurl {

      url = "${liveBootstrap}/patches/dev-tty.patch";

      sha256 = "1315slv5f7ziajqyxg4jlyanf1xwd06xw14y6pq7xpm3jzjk55j9";

    })

  ];

in

kaem.runCommand "${pname}-${version}" {

  inherit pname version;

  nativeBuildInputs = [

    tinycc.compiler

    gnumake

    gnupatch

    coreutils

  ];

  passthru.runCommand = name: env: buildCommand:

    derivationWithMeta ({

      inherit name buildCommand;

      builder = "${bash_2_05}/bin/bash";

      args = [

        "-e"

        (builtins.toFile "bash-builder.sh" ''

          export CONFIG_SHELL=$SHELL

          bash -eux $buildCommandPath

        '')

      ];

      passAsFile = [ "buildCommand" ];

      SHELL = "${bash_2_05}/bin/bash";

      PATH = lib.makeBinPath ((env.nativeBuildInputs or []) ++ [

        bash_2_05

        coreutils

        # provides untar, ungz, and unbz2

        mescc-tools-extra

      ]);

    } // (builtins.removeAttrs env [ "nativeBuildInputs" ]));

  passthru.tests.get-version = result:

    kaem.runCommand "${pname}-get-version-${version}" {} ''

      ${result}/bin/bash --version

      mkdir ''${out}

    '';

  meta = with lib; {

    description = "GNU Bourne-Again Shell, the de facto standard shell on Linux";

    homepage = "https://www.gnu.org/software/bash";

    license = licenses.gpl3Plus;

    maintainers = teams.minimal-bootstrap.members;

    platforms = platforms.unix;

  };

} ''

  # Unpack

  ungz --file ${src} --output bash.tar

  untar --file bash.tar

  rm bash.tar

  cd bash-${version}

  # Patch

  ${lib.concatMapStringsSep "\n" (f: "patch -Np0 -i ${f}") patches}

  # Configure

  cp ${main_mk} Makefile

  cp ${builtins_mk} builtins/Makefile

  cp ${common_mk} common.mk

  touch config.h

  touch include/version.h

  touch include/pipesize.h

  # Build

  make \

    CC="tcc -B ${tinycc.libs}/lib" \

    mkbuiltins

  cd builtins

  make \

    CC="tcc -B ${tinycc.libs}/lib" \

    libbuiltins.a

  cd ..

  make CC="tcc -B ${tinycc.libs}/lib"

  # Install

  install -D bash ''${out}/bin/bash

  ln -s bash ''${out}/bin/sh

''

  (extra: lib.callPackageWith ({ inherit lib config buildPlatform hostPlatform; } // extra))

  (self: with self; {

    bash_2_05 = callPackage ./bash/2.nix { tinycc = tinycc-mes; };

    coreutils = callPackage ./coreutils { tinycc = tinycc-mes; };

    gnupatch = callPackage ./gnupatch { tinycc = tinycc-mes; };

    test = kaem.runCommand "minimal-bootstrap-test" {} ''

      echo ${mes.compiler.tests.get-version}

      echo ${tinycc-mes.compiler.tests.chain}

      echo ${bash_2_05.tests.get-version}

      mkdir ''${out}

    '';

  })