added pcalc package

pkgs/applications/science/math/pcalc/default.nix

@@ -0,0 +1,26 @@
+{ stdenv, fetchgit, bison2, flex }:
+
+with stdenv.lib;
+
+stdenv.mkDerivation rec {
+  name = "pcalc-${version}";
+  version = "20120812";
+
+  src = fetchgit {
+    url = git://git.code.sf.net/p/pcalc/code;
+    rev = "db5c5d587d4d24ff6b23405a92eeaad4c0f99618";
+    sha256 = "1bzmiz9rrss3xk0vzszbisjkph73zwgc0riqn9zdd2h1iv6dgq92";
+  };
+
+  makeFlags = [ "DESTDIR= BINDIR=$(out)/bin" ];
+  buildInputs = [ bison2 flex ];
+
+  meta = {
+    homepage = http://pcalc.sourceforge.net/;
+    description = "Programmer's calculator";
+    license = licenses.gpl2;
+    maintainers = with stdenv.lib.maintainers; [ ftrvxmtrx ];
+    platforms = stdenv.lib.platforms.linux;
+    inherit version;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -11392,6 +11392,8 @@ let
 
   pari = callPackage ../applications/science/math/pari {};
 
+  pcalc = callPackage ../applications/science/math/pcalc { };
+
   pspp = callPackage ../applications/science/math/pssp {
     inherit (gnome) libglade gtksourceview;
   };