diff --git a/pkgs/development/tools/slimerjs/default.nix b/pkgs/development/tools/slimerjs/default.nix
index 473f24b1b55..7ebe7dba851 100644
--- a/pkgs/development/tools/slimerjs/default.nix
+++ b/pkgs/development/tools/slimerjs/default.nix
@@ -1,33 +1,24 @@
-{lib, stdenv, fetchFromGitHub, zip, unzip, firefox, bash}:
-let
-  s = # Generated upstream information
-  rec {
-    baseName="slimerjs";
-    version="1.0.0";
-    name="${baseName}-${version}";
+{ lib, stdenv, fetchFromGitHub, zip, unzip, firefox, bash }:
+
+stdenv.mkDerivation rec {
+  pname = "slimerjs";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
     owner = "laurentj";
-    repo = baseName;
-    sha256="1w4sfrv520isbs7r1rlzl5y3idrpad7znw9fc92yz40jlwz7sxs4";
+    repo = "slimerjs";
+    sha256 = "sha256-RHd9PqcSkO9FYi5x+09TN7c4fKGf5pCPXjoCUXZ2mvA=";
     rev = version;
   };
-in
-stdenv.mkDerivation {
-  inherit (s) name version;
+
   buildInputs = [ zip ];
   nativeBuildInputs = [ unzip ];
-  #src = fetchurl {
-  #  inherit (s) url sha256;
-  #};
-  #src = fetchgit {
-  #  inherit (s) url sha256 rev;
-  #};
-  src = fetchFromGitHub {
-    inherit (s) owner repo rev sha256;
-  };
+
   preConfigure = ''
     test -d src && cd src
     test -f omni.ja || zip omni.ja -r */
   '';
+
   installPhase = ''
     mkdir -p "$out"/{bin,share/doc/slimerjs,lib/slimerjs}
     cp LICENSE README* "$out/share/doc/slimerjs"
@@ -38,11 +29,11 @@ stdenv.mkDerivation {
     chmod a+x "$out/bin/slimerjs"
     sed -e 's@MaxVersion=[3456][0-9][.]@MaxVersion=99.@' -i "$out/lib/slimerjs/application.ini"
   '';
-  meta = {
-    inherit (s) version;
+
+  meta = with lib; {
     description = "Gecko-based programmatically-driven browser";
-    license = lib.licenses.mpl20 ;
-    maintainers = [lib.maintainers.raskin];
-    platforms = lib.platforms.linux;
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.linux;
   };
 }
diff --git a/pkgs/development/tools/slimerjs/default.upstream b/pkgs/development/tools/slimerjs/default.upstream
deleted file mode 100644
index f2d6b89e51b..00000000000
--- a/pkgs/development/tools/slimerjs/default.upstream
+++ /dev/null
@@ -1,2 +0,0 @@
-url http://slimerjs.org/download.html
-version_link '/slimerjs-[0-9.]+[.]zip$'
diff --git a/pkgs/development/tools/slimerjs/default.upstream.git b/pkgs/development/tools/slimerjs/default.upstream.git
deleted file mode 100644
index 3066d5de829..00000000000
--- a/pkgs/development/tools/slimerjs/default.upstream.git
+++ /dev/null
@@ -1,3 +0,0 @@
-url https://github.com/laurentj/slimerjs
-target default.nix
-GH_latest