diff --git a/pkgs/servers/sql/postgresql/ext/plr.nix b/pkgs/servers/sql/postgresql/ext/plr.nix
new file mode 100644
index 0000000000000..0bd727e7acf96
--- /dev/null
+++ b/pkgs/servers/sql/postgresql/ext/plr.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, R, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "plr";
+  version = "8.4.1";
+
+  src = fetchFromGitHub {
+    owner = "postgres-plr";
+    repo = "plr";
+    rev = "REL${builtins.replaceStrings ["."] ["_"] version}";
+    sha256 = "1wy4blg8jl30kzhrkvbncl4gmy6k71zipnq89ykwi1vmx89v3ab7";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ R postgresql ];
+  preBuild = ''
+    export USE_PGXS=1
+  '';
+  installPhase = ''
+    install -D plr.so -t $out/lib/
+    install -D {plr--unpackaged--8.4.1.sql,plr--8.4.1.sql,plr.control} -t $out/share/postgresql/extension
+  '';
+
+  meta = with lib; {
+    description = "PL/R - R Procedural Language for PostgreSQL";
+    homepage = "https://github.com/postgres-plr/plr";
+    maintainers = with maintainers; [ qoelet ];
+    platforms = [ "x86_64-linux" ];
+    license = licenses.gpl2Only;
+  };
+}
diff --git a/pkgs/servers/sql/postgresql/packages.nix b/pkgs/servers/sql/postgresql/packages.nix
index d45c2d37c8db9..e8b2f4130a598 100644
--- a/pkgs/servers/sql/postgresql/packages.nix
+++ b/pkgs/servers/sql/postgresql/packages.nix
@@ -27,6 +27,8 @@ self: super: {
 
     plpgsql_check = super.callPackage ./ext/plpgsql_check.nix { };
 
+    plr = super.callPackage ./ext/plr.nix { };
+
     plv8 = super.callPackage ./ext/plv8.nix {
         v8 = super.callPackage ../../../development/libraries/v8/plv8_6_x.nix {
             python = self.python2;