diff --git a/pkgs/applications/editors/emacs-modes/pcache/default.nix b/pkgs/applications/editors/emacs-modes/pcache/default.nix
new file mode 100644
index 00000000000..f4dcf03dee8
--- /dev/null
+++ b/pkgs/applications/editors/emacs-modes/pcache/default.nix
@@ -0,0 +1,30 @@
+{ stdenv, fetchgit, emacs }:
+
+stdenv.mkDerivation rec {
+  name = "pcache-0.2.3";
+
+  src = fetchgit {
+    url = "https://github.com/sigma/pcache.git";
+    rev = "fa8f863546e2e8f2fc0a70f5cc766a7f584e01b6";
+    sha256 = "f7cdad5a729b24f96ec69db4adfd19daf45c27aaf3a0267385b252cb2e59daa0";
+  };
+
+  buildInputs = [ emacs ];
+
+  buildPhase = ''
+    emacs --batch -f batch-byte-compile pcache.el
+  '';
+
+  installPhase = ''
+    install -d $out/share/emacs/site-lisp
+    install pcache.el pcache.elc $out/share/emacs/site-lisp
+  '';
+
+  meta = {
+    description = "Persistent caching for Emacs";
+    homepage = https://github.com/sigma/pcache.el;
+    license = stdenv.lib.licenses.gpl2Plus;
+
+    platforms = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/applications/editors/emacs-modes/s/default.nix b/pkgs/applications/editors/emacs-modes/s/default.nix
new file mode 100644
index 00000000000..b818348939e
--- /dev/null
+++ b/pkgs/applications/editors/emacs-modes/s/default.nix
@@ -0,0 +1,23 @@
+{stdenv, fetchurl, emacs}:
+
+let version = "1.9.0";
+
+in stdenv.mkDerivation {
+  name = "emacs-s-${version}";
+
+  src = fetchurl {
+    url = "https://github.com/magnars/s.el/archive/${version}.tar.gz";
+    sha256 = "1gah2k577gvnmxlpw7zrz0jr571vghzhdv2hbgchlgah07czd091";
+  };
+
+  buildInputs = [ emacs ];
+
+  buildPhase = ''
+    emacs -L . --batch -f batch-byte-compile *.el
+  '';
+
+  installPhase = ''
+    install -d $out/share/emacs/site-lisp
+    install *.el *.elc $out/share/emacs/site-lisp
+  '';
+}
diff --git a/pkgs/applications/editors/emacs-modes/xml-rpc/default.nix b/pkgs/applications/editors/emacs-modes/xml-rpc/default.nix
new file mode 100644
index 00000000000..661430516b7
--- /dev/null
+++ b/pkgs/applications/editors/emacs-modes/xml-rpc/default.nix
@@ -0,0 +1,32 @@
+{stdenv, fetchurl, emacs}:
+
+stdenv.mkDerivation rec {
+  name = "xml-rpc-1.6.8";
+
+  src = fetchurl {
+    url = https://launchpadlibrarian.net/40270196/xml-rpc.el;
+    sha256 = "0i8hf90yhrjwqrv7q1f2g1cff6ld8apqkka42fh01wkdys1fbm7b";
+  };
+
+  phases = [ "buildPhase" "installPhase"];
+
+  buildInputs = [ emacs ];
+
+  buildPhase = ''
+    cp $src xml-rpc.el
+    emacs --batch -f batch-byte-compile xml-rpc.el
+  '';
+
+  installPhase = ''
+    install -d $out/share/emacs/site-lisp
+    install xml-rpc.el* $out/share/emacs/site-lisp
+  '';
+
+  meta = {
+    description = "Elisp implementation of clientside XML-RPC";
+    homepage = https://launchpad.net/xml-rpc-el;
+    license = stdenv.lib.licenses.gpl3Plus;
+
+    platforms = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 7317adaf4ec..60ea94f2b5d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12340,6 +12340,8 @@ in
 
     org2blog = callPackage ../applications/editors/emacs-modes/org2blog { };
 
+    pcache = callPackage ../applications/editors/emacs-modes/pcache { };
+
     phpMode = callPackage ../applications/editors/emacs-modes/php { };
 
     prologMode = callPackage ../applications/editors/emacs-modes/prolog { };
@@ -12368,6 +12370,8 @@ in
 
     rudel = callPackage ../applications/editors/emacs-modes/rudel { };
 
+    s = callPackage ../applications/editors/emacs-modes/s { };
+
     sbtMode = callPackage ../applications/editors/emacs-modes/sbt-mode { };
 
     scalaMode1 = callPackage ../applications/editors/emacs-modes/scala-mode/v1.nix { };
@@ -12383,6 +12387,8 @@ in
 
     writeGood = callPackage ../applications/editors/emacs-modes/writegood { };
 
+    xmlRpc = callPackage ../applications/editors/emacs-modes/xml-rpc { };
+
     cask = callPackage ../applications/editors/emacs-modes/cask { };
   };