texinfo: 6.7 -> 6.8

pkgs/development/tools/misc/texinfo/6.8.nix

@@ -0,0 +1,4 @@
+import ./common.nix {
+  version = "6.8";
+  sha256 = "1i7yb7mrp3inz25zbzv2pllr4y7d58v818f1as7iz8mw53nm7dwf";
+}

pkgs/development/tools/misc/texinfo/common.nix

@@ -54,6 +54,12 @@ stdenv.mkDerivation {
     && !stdenv.isDarwin
     && !stdenv.isSunOS; # flaky
 
+  checkFlagsArray = [
+    # Test is known to fail on various locales on texinfo-6.8:
+    #   https://lists.gnu.org/r/bug-texinfo/2021-07/msg00012.html
+    "XFAIL_TESTS=test_scripts/layout_formatting_fr_icons.sh"
+  ];
+
   meta = {
     homepage = "https://www.gnu.org/software/texinfo/";
     description = "The GNU documentation system";

pkgs/top-level/all-packages.nix

@@ -5160,7 +5160,9 @@ with pkgs;
 
   fverb = callPackage ../applications/audio/fverb { };
 
-  fwknop = callPackage ../tools/security/fwknop { };
+  fwknop = callPackage ../tools/security/fwknop {
+    texinfo = texinfo6_7; # Uses @setcontentsaftertitlepage, removed in 6.8.
+  };
 
   exfat = callPackage ../tools/filesystems/exfat { };
 
@@ -14796,7 +14798,8 @@ with pkgs;
   texinfo4 = texinfo413;
   texinfo5 = callPackage ../development/tools/misc/texinfo/5.2.nix { };
   texinfo6_5 = callPackage ../development/tools/misc/texinfo/6.5.nix { }; # needed for allegro
-  texinfo6 = callPackage ../development/tools/misc/texinfo/6.7.nix { };
+  texinfo6_7 = callPackage ../development/tools/misc/texinfo/6.7.nix { }; # needed for gpm, iksemel and fwknop
+  texinfo6 = callPackage ../development/tools/misc/texinfo/6.8.nix { };
   texinfo = texinfo6;
   texinfoInteractive = appendToName "interactive" (
     texinfo.override { interactive = true; }
@@ -21250,6 +21253,10 @@ with pkgs;
 
   gpm = callPackage ../servers/gpm {
     ncurses = null;  # Keep curses disabled for lack of value
+
+    # latest 6.8 mysteriously fails to parse '@headings single':
+    #   https://lists.gnu.org/archive/html/bug-texinfo/2021-09/msg00011.html
+    texinfo = texinfo6_7;
   };
 
   gpm-ncurses = gpm.override { inherit ncurses; };
@@ -25117,7 +25124,9 @@ with pkgs;
     inherit (perlPackages.override { pkgs = pkgs // { imagemagick = imagemagickBig;}; }) ImageMagick;
   };
 
-  iksemel = callPackage ../development/libraries/iksemel { };
+  iksemel = callPackage ../development/libraries/iksemel {
+    texinfo = texinfo6_7; # Uses @setcontentsaftertitlepage, removed in 6.8.
+  };
 
   imag = callPackage ../applications/misc/imag {
     inherit (darwin.apple_sdk.frameworks) Security;