next: Fix #74258

Next had a few issues with its packaging:
* the platform port was exposed in all-packages
  And this is not useful for outside users.
  It's now a local attribute in the next package.

* the platform port wasn't wrapped correctly
  It appears that the lisp core was being wrapped,
  when instead the actual gtk application that's
  called within the lisp core had to be wrapped.

* codestyle/indentation

pkgs/applications/networking/browsers/next-gtk-webkit/default.nix

@@ -1,25 +0,0 @@
-{ stdenv, gcc7, pkg-config
-, next
-, webkitgtk, gsettings-desktop-schemas
-}:
-
-stdenv.mkDerivation rec {
-  pname = "next-gtk-webkit";
-  inherit (next) src version;
-
-  makeFlags = [ "gtk-webkit" "PREFIX=$(out)" ];
-  installTargets = "install-gtk-webkit";
-
-  nativeBuildInputs = [ gcc7 pkg-config ];
-  buildInputs = [
-    webkitgtk
-    gsettings-desktop-schemas
-  ];
-  meta = with stdenv.lib; {
-    description = "Infinitely extensible web-browser (user interface only)";
-    homepage = https://next.atlas.engineer;
-    license = licenses.bsd3;
-    maintainers = [ maintainers.lewo ];
-    platforms = [ "x86_64-linux" ];
-  };
-}

pkgs/applications/networking/browsers/next/default.nix

@@ -1,11 +1,18 @@
-{ pkgs, stdenv, fetchFromGitHub
-, gcc7, pkg-config, makeWrapper
-, glib-networking
-, next-gtk-webkit
+{ stdenv
+, fetchFromGitHub
 , lispPackages
 , sbcl
+, callPackage
 }:
 
+let
+
+  # This is the wrapped webkitgtk platform port that we hardcode into the Lisp Core.
+  # See https://github.com/atlas-engineer/next/tree/master/ports#next-platform-ports
+  next-gtk-webkit = callPackage ./next-gtk-webkit.nix {};
+
+in
+
 stdenv.mkDerivation rec {
   pname = "next";
   version = "1.3.4";
@@ -17,17 +24,12 @@ stdenv.mkDerivation rec {
     sha256 = "00iqv4xarabl98gdl1rzqkc5v0vfljx1nawsxqsx9x3a9mnxmgxi";
   };
 
-    # Stripping destroys the generated SBCL image
-    dontStrip = true;
-
-    prePatch = ''
-      substituteInPlace source/ports/gtk-webkit.lisp \
-        --replace "next-gtk-webkit" "${next-gtk-webkit}/bin/next-gtk-webkit"
-    '';
-
-    nativeBuildInputs =
-      [ sbcl makeWrapper ] ++ (with lispPackages;
-      [ prove-asdf trivial-features ]);
+  nativeBuildInputs = [
+    sbcl
+  ] ++ (with lispPackages; [
+    prove-asdf
+    trivial-features
+  ]);
 
   buildInputs = with lispPackages; [
     alexandria
@@ -58,7 +60,11 @@ stdenv.mkDerivation rec {
     trivial-clipboard
     unix-opts
   ];
-    propagatedBuildInputs = [ next-gtk-webkit ];
+
+  prePatch = ''
+    substituteInPlace source/ports/gtk-webkit.lisp \
+      --replace "next-gtk-webkit" "${next-gtk-webkit}/bin/next-gtk-webkit"
+  '';
 
   buildPhase = ''
     common-lisp.sh --eval "(require :asdf)" \
@@ -71,13 +77,11 @@ stdenv.mkDerivation rec {
     install -D -m0755 next $out/bin/next
   '';
 
-    preFixup = ''
-      wrapProgram $out/bin/next \
-        --prefix GIO_EXTRA_MODULES : "${glib-networking.out}/lib/gio/modules"
-    '';
+  # Stripping destroys the generated SBCL image
+  dontStrip = true;
 
   meta = with stdenv.lib; {
-      description = "Infinitely extensible web-browser (with Lisp development files)";
+    description = "Infinitely extensible web-browser (with Lisp development files using WebKitGTK platform port)";
     homepage = https://next.atlas.engineer;
     license = licenses.bsd3;
     maintainers = [ maintainers.lewo ];

pkgs/applications/networking/browsers/next/next-gtk-webkit.nix

@@ -0,0 +1,50 @@
+# https://github.com/atlas-engineer/next/tree/master/ports/gtk-webkit
+
+{ stdenv
+, pkg-config
+, next
+, webkitgtk
+, gtk3
+, glib
+, gsettings-desktop-schemas
+, glib-networking
+, gst_all_1
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "next-gtk-webkit";
+  inherit (next) src version;
+
+  nativeBuildInputs = [
+    pkg-config
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    glib
+    glib-networking
+    gsettings-desktop-schemas
+    gtk3
+    webkitgtk
+    gst_all_1.gst-plugins-base
+    gst_all_1.gstreamer
+  ];
+
+  makeFlags = [
+    "gtk-webkit"
+    "PREFIX=${placeholder "out"}"
+  ];
+
+  installTargets =  [
+    "install-gtk-webkit"
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Infinitely extensible web-browser (user interface only)";
+    homepage = https://next.atlas.engineer;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.lewo ];
+    platforms = [ "x86_64-linux" ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -4559,8 +4559,6 @@ in
 
   next = callPackage ../applications/networking/browsers/next { };
 
-  next-gtk-webkit = callPackage ../applications/networking/browsers/next-gtk-webkit { };
-
   nfpm = callPackage ../tools/package-management/nfpm { };
 
   nginx-config-formatter = callPackage ../tools/misc/nginx-config-formatter { };