bison2: remove

pkgs/development/tools/parsing/bison/2.x.nix

@@ -1,43 +0,0 @@
-{ stdenv, lib, fetchurl, m4, perl }:
-
-stdenv.mkDerivation rec {
-  name = "bison-2.7.1";
-
-  src = fetchurl {
-    url = "mirror://gnu/bison/${name}.tar.gz";
-    sha256 = "0c9li3iaslzzr3zig6m3zlmb4r8i0wfvkcrvdyiqxasb09mjkqh8";
-  };
-
-  nativeBuildInputs = [ m4 ];
-  propagatedBuildInputs = [ m4 ];
-  checkInputs = [ perl ];
-
-  patches = lib.optional stdenv.isDarwin ./darwin-vasnprintf.patch;
-
-  doCheck = true;
-  # M4 = "${m4}/bin/m4";
-
-  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; };
-}

pkgs/development/tools/parsing/bison/darwin-vasnprintf.patch

@@ -1,12 +0,0 @@
-diff -ur bison-2.7-pristine/lib/vasnprintf.c bison-2.7/lib/vasnprintf.c
---- bison-2.7-pristine/lib/vasnprintf.c	2012-11-30 20:48:23.000000000 +0900
-+++ bison-2.7/lib/vasnprintf.c	2018-06-28 16:55:31.000000000 +0900
-@@ -4870,7 +4870,7 @@
- #endif
-                   *fbp = dp->conversion;
- #if USE_SNPRINTF
--# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__))
-+# if !(((__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__) || ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) || (defined __APPLE__ && defined __MACH__))
-                 fbp[1] = '%';
-                 fbp[2] = 'n';
-                 fbp[3] = '\0';

pkgs/top-level/all-packages.nix

@@ -9715,9 +9715,7 @@ in
     };
   });
 
-  bison2 = callPackage ../development/tools/parsing/bison/2.x.nix { };
-  bison3 = callPackage ../development/tools/parsing/bison/3.x.nix { };
-  bison = bison3;
+  bison = callPackage ../development/tools/parsing/bison { };
   yacc = bison; # TODO: move to aliases.nix
 
   blackmagic = callPackage ../development/tools/misc/blackmagic { };