Lammps packaging fix.

pkgs/applications/lammps/default.nix

@@ -8,7 +8,7 @@
 , gzip
 , fftw
 , openblas
-, mpi ? null
+, mpich2
 , libnrm
 , nrmSupport ? false
 }:
@@ -35,10 +35,10 @@ stdenv.mkDerivation rec {
   #};
 
   passthru = {
-    inherit mpi;
+    inherit mpich2;
   };
 
-  buildInputs = [ fftw libpng openblas gzip bash mpi ] ++ (optional nrmSupport libnrm);
+  buildInputs = [ fftw libpng openblas gzip bash mpich2 ] ++ (optional nrmSupport libnrm);
 
   # Must do manual build due to LAMMPS requiring a seperate build for
   # the libraries and executable

pkgs/default.nix

@@ -51,7 +51,6 @@ let
       nrm = cpDefaultPin ./nrm { inherit pythonPackages; nrm-containers = containers; };
     };
 
-    #Instrumented applications
     applications =
     let
       paths = {