nixpkgs/pkgs/development/tools/parsing/bison/default.nix
Matthew Bauer d0677e6d45 treewide: add warning comment to “boot” packages
This adds a warning to the top of each “boot” package that reads:

  Note: this package is used for bootstrapping fetchurl, and thus cannot
  use fetchpatch! All mutable patches (generated by GitHub or cgit) that
  are needed here should be included directly in Nixpkgs as files.

This makes it clear to maintainer that they may need to treat this
package a little differently than others. Importantly, we can’t use
fetchpatch here due to using <nix/fetchurl.nix>. To avoid having stale
hashes, we need to include patches that are subject to changing
overtime (for instance, gitweb’s patches contain a version number at
the bottom).
2020-07-31 08:56:53 +02:00

47 lines
1.5 KiB
Nix

{ stdenv, fetchurl, m4, perl, help2man }:
# Note: this package is used for bootstrapping fetchurl, and thus
# cannot use fetchpatch! All mutable patches (generated by GitHub or
# cgit) that are needed here should be included directly in Nixpkgs as
# files.
stdenv.mkDerivation rec {
pname = "bison";
version = "3.6.4";
src = fetchurl {
url = "mirror://gnu/${pname}/${pname}-${version}.tar.gz";
sha256 = "1s8kmfhg7a58vm65fc977ckp8zspy8diayrcjhs3cgrqnmjdx0w1";
};
nativeBuildInputs = [ m4 perl ] ++ stdenv.lib.optional stdenv.isSunOS help2man;
propagatedBuildInputs = [ m4 ];
doCheck = false; # fails
doInstallCheck = false; # fails
meta = {
homepage = "https://www.gnu.org/software/bison/";
description = "Yacc-compatible parser generator";
license = stdenv.lib.licenses.gpl3Plus;
longDescription = ''
Bison is a general-purpose parser generator that converts an
annotated context-free grammar into an LALR(1) or GLR parser for
that grammar. Once you are proficient with Bison, you can use
it to develop a wide range of language parsers, from those used
in simple desk calculators to complex programming languages.
Bison is upward compatible with Yacc: all properly-written Yacc
grammars ought to work with Bison with no change. Anyone
familiar with Yacc should be able to use Bison with little
trouble. You need to be fluent in C or C++ programming in order
to use Bison.
'';
platforms = stdenv.lib.platforms.unix;
};
passthru = { glrSupport = true; };
}