ed: refactor

A crazy refactor that factors the sources to a separate file, in order to
accomodate extra sources in parallel to the stable one.

pkgs/applications/editors/ed/default.nix

···
-{ lib, stdenv, fetchurl, lzip }:
-
-# 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.
+{ lib, pkgs }:
 
-stdenv.mkDerivation rec {
-  pname = "ed";
-  version = "1.19";
-
-  src = fetchurl {
-    url = "mirror://gnu/ed/${pname}-${version}.tar.lz";
-    hash = "sha256-zi8uXEJHkKqW0J2suT2bv9wLfrYknJy3U4RS6Ox3zUg=";
-  };
+lib.makeScope pkgs.newScope (self:
+  let
+    inherit (self) callPackage;
+  in {
+    sources = import ./sources.nix {
+      inherit lib;
+      inherit (pkgs) fetchurl;
+    };
 
-  nativeBuildInputs = [ lzip ];
-
-  configureFlags = [
-    "CC=${stdenv.cc.targetPrefix}cc"
-  ];
-
-  doCheck = true;
-
-  meta = {
-    description = "An implementation of the standard Unix editor";
-    longDescription = ''
-      GNU ed is a line-oriented text editor.  It is used to create,
-      display, modify and otherwise manipulate text files, both
-      interactively and via shell scripts.  A restricted version of ed,
-      red, can only edit files in the current directory and cannot
-      execute shell commands.  Ed is the "standard" text editor in the
-      sense that it is the original editor for Unix, and thus widely
-      available.  For most purposes, however, it is superseded by
-      full-screen editors such as GNU Emacs or GNU Moe.
-    '';
-    license = lib.licenses.gpl3Plus;
-    homepage = "https://www.gnu.org/software/ed/";
-    maintainers = [ ];
-    platforms = lib.platforms.unix;
-  };
-}
+    ed = callPackage (self.sources.ed) { };
+  })

pkgs/applications/editors/ed/generic.nix

···
+{ pname
+, version
+, src
+, patches ? [ ]
+, meta
+}:
+
+# 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.
+
+{ lib
+, stdenv
+, fetchurl
+, lzip
+}:
+
+stdenv.mkDerivation {
+  inherit pname version src patches;
+
+  nativeBuildInputs = [ lzip ];
+
+  configureFlags = [
+    "CC=${stdenv.cc.targetPrefix}cc"
+  ];
+
+  doCheck = true;
+
+  inherit meta;
+}

pkgs/applications/editors/ed/sources.nix

···
+{ lib
+, fetchurl
+}:
+
+let
+  meta = {
+    description = "The GNU implementation of the standard Unix editor";
+    longDescription = ''
+      GNU ed is a line-oriented text editor. It is used to create, display,
+      modify and otherwise manipulate text files, both interactively and via
+      shell scripts. A restricted version of ed, red, can only edit files in the
+      current directory and cannot execute shell commands. Ed is the 'standard'
+      text editor in the sense that it is the original editor for Unix, and thus
+      widely available. For most purposes, however, it is superseded by
+      full-screen editors such as GNU Emacs or GNU Moe.
+    '';
+    license = lib.licenses.gpl3Plus;
+    homepage = "https://www.gnu.org/software/ed/";
+    maintainers = with lib.maintainers; [ AndersonTorres ];
+    platforms = lib.platforms.unix;
+  };
+in
+{
+  ed = let
+    pname = "ed";
+    version = "1.19";
+    src = fetchurl {
+      url = "mirror://gnu/ed/ed-${version}.tar.lz";
+      hash = "sha256-zi8uXEJHkKqW0J2suT2bv9wLfrYknJy3U4RS6Ox3zUg=";
+    };
+  in import ./generic.nix {
+    inherit pname version src meta;
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   ecs-agent = callPackage ../applications/virtualization/ecs-agent { };
 
-  ed = callPackage ../applications/editors/ed { };
+  inherit (recurseIntoAttrs (callPackage ../applications/editors/ed { }))
+    ed;
 
   edbrowse = callPackage ../applications/editors/edbrowse { };