Merge remote-tracking branch 'origin/master' into staging

lib/customisation.nix

@@ -195,9 +195,10 @@ rec {
     let self = f self // {
           newScope = scope: newScope (self // scope);
           callPackage = self.newScope {};
+          # TODO(@Ericson2314): Haromonize argument order of `g` with everything else
           overrideScope = g:
             makeScope newScope
-            (self_: let super = f self_; in super // g super self_);
+            (lib.fixedPoints.extends (lib.flip g) f);
           packages = f;
         };
     in self;

lib/default.nix

@@ -80,7 +80,7 @@ let
     inherit (strings) concatStrings concatMapStrings concatImapStrings
       intersperse concatStringsSep concatMapStringsSep
       concatImapStringsSep makeSearchPath makeSearchPathOutput
-      makeLibraryPath makeBinPath makePerlPath optionalString
+      makeLibraryPath makeBinPath makePerlPath makeFullPerlPath optionalString
       hasPrefix hasSuffix stringToCharacters stringAsChars escape
       escapeShellArg escapeShellArgs replaceChars lowerChars
       upperChars toLower toUpper addContextFrom splitString

lib/licenses.nix

@@ -654,6 +654,11 @@ lib.mapAttrs (n: v: v // { shortName = n; }) rec {
     fullName = "wxWindows Library Licence, Version 3.1";
   };
 
+  xfig = {
+    fullName = "xfig";
+    url = "http://mcj.sourceforge.net/authors.html#xfig";
+  };
+
   zlib = spdx {
     spdxId = "Zlib";
     fullName = "zlib License";

lib/strings.nix

@@ -126,6 +126,15 @@ rec {
   */
   makePerlPath = makeSearchPathOutput "lib" "lib/perl5/site_perl";
 
+  /* Construct a perl search path recursively including all dependencies (such as $PERL5LIB)
+
+     Example:
+       pkgs = import <nixpkgs> { }
+       makeFullPerlPath [ pkgs.perlPackages.CGI ]
+       => "/nix/store/fddivfrdc1xql02h9q500fpnqy12c74n-perl-CGI-4.38/lib/perl5/site_perl:/nix/store/8hsvdalmsxqkjg0c5ifigpf31vc4vsy2-perl-HTML-Parser-3.72/lib/perl5/site_perl:/nix/store/zhc7wh0xl8hz3y3f71nhlw1559iyvzld-perl-HTML-Tagset-3.20/lib/perl5/site_perl"
+  */
+  makeFullPerlPath = deps: makePerlPath (lib.misc.closePropagation deps);
+
   /* Depending on the boolean `cond', return either the given string
      or the empty string. Useful to concatenate against a bigger string.