diff --git a/env/merlin/sysconfigs/packages.yaml b/env/merlin/sysconfigs/packages.yaml
index d93e121..378ef13 100644
--- a/env/merlin/sysconfigs/packages.yaml
+++ b/env/merlin/sysconfigs/packages.yaml
@@ -27,10 +27,12 @@ packages:
     target:
       - haswell
   autoconf:
+    buildable: false
     externals:
       - prefix: /usr
         spec: autoconf@2.69
   automake:
+    buildable: false
     externals:
       - prefix: /usr
         spec: automake@1.13.4
@@ -39,6 +41,7 @@ packages:
       - prefix: /opt/psi/System/bash/5.1.16
         spec: bash@5.1.16
   binutils:
+    buildable: false
     externals:
       - prefix: /usr
         spec: binutils@2.27.44
@@ -47,6 +50,7 @@ packages:
       - prefix: /opt/psi/Programming/bison/3.8.2
         spec: bison@3.8.2
   bzip2:
+    buildable: false
     externals:
       - prefix: /usr
         spec: bzip2@1.0.6
@@ -55,6 +59,7 @@ packages:
       - prefix: /opt/psi/Programming/cmake/3.23.2
         spec: cmake@3.23.2
   cpio:
+    buildable: false
     externals:
       - prefix: /usr
         spec: cpio@2.11
@@ -65,46 +70,80 @@ packages:
       - prefix: /opt/psi/Compiler/cuda/11.0.3/gcc/9.3.0
         spec: cuda@11.0.3%gcc@9.3.0
   curl:
+    buildable: false
     externals:
       - prefix: /usr
         spec: curl@7.29.0
   cvs:
+    buildable: false
     externals:
       - prefix: /usr
         spec: cvs@1.11.23
   diffutils:
+    buildable: false
     externals:
       - prefix: /usr
         spec: diffutils@3.3
   doxygen:
+    buildable: false
     externals:
       - prefix: /usr
         spec: doxygen@1.8.5
+  expat:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: expat@1.6.0
   file:
     externals:
       - prefix: /usr
         spec: file@5.11
   findutils:
+    buildable: false
     externals:
       - prefix: /usr
         spec: findutils@4.5.11
   flex:
+    buildable: false
     externals:
       - prefix: /usr
         spec: flex@2.5.37+lex
+  freetype:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: freetype@20.0.14
   gawk:
+    buildable: false
     externals:
       - prefix: /usr
         spec: gawk@4.0.2
+  gcc:
+    externals:
+      - prefix: /opt/psi/Programming/gcc/9.5.0
+        spec: gcc@9.5.0
   ghostscript:
+    buildable: false
     externals:
       - prefix: /usr
         spec: ghostscript@9.25
   git:
+    buildable: false
     externals:
       - prefix: /usr
         spec: git@1.8.3.1~tcltk
+  glew:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: glew@1.10.0
+  glx:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: glx@0.0.0
   gmake:
+    buildable: false
     externals:
       - prefix: /usr
         spec: gmake@3.82
@@ -113,6 +152,7 @@ packages:
       - prefix: /opt/psi/Libraries/gmp/6.2.1
         spec: gmp@6.2.1
   groff:
+    buildable: false
     externals:
       - prefix: /usr
         spec: groff@1.22.2
@@ -136,10 +176,11 @@ packages:
     externals:
       - prefix: /opt/psi/Programming/intel/22.2
         spec: intel-oneapi-mpi@2021.6.0%intel@2021.6.0
-  json:
+  jsoncpp:
+    buildable: false
     externals:
       - prefix: /usr
-        spec: jsoncpp
+        spec: jsoncpp@1.9.4
   julia:
     externals:
       - prefix: /opt/psi/Programming/Julia/1.7.3
@@ -148,10 +189,16 @@ packages:
     externals:
       - prefix: /opt/psi/Tools/krb5/1.20
         spec: krb5@1.20
-  libbsd:
+  libedit:
+    buildable: false
     externals:
       - prefix: /usr
-        spec: libbsd
+        spec: libedit@0.0.42
+  libevent:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libevent@2.0
   libfabric:
     buildable: false
     externals:
@@ -167,39 +214,97 @@ packages:
     externals:
       - prefix: /usr
         spec: libfuse@3.6.1
+  libice:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libice@6.3.0
+  libjpeg-turbo:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libjpeg-turbo@62.1.0
   libogg:
+    buildable: false
     externals:
       - prefix: /usr
         spec: libogg@0.8.0
   libpng:
+    buildable: false
     externals:
       - prefix: /usr
         spec: libpng@3.50.0
   libpthread:
+    buildable: false
     externals:
       - prefix: /usr
         spec: libpthread@2.17
+  libpthread-stubs:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libpthread-stubs@0.4
+  libreadline:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libreadline@6.2
+  libtheora:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libtheora@0.3.10
   libtiff:
+    buildable: false
     externals:
       - prefix: /usr
         spec: libtiff@5.2.0
   libtool:
+    buildable: false
     externals:
       - prefix: /usr
         spec: libtool@2.4.2
-  libxml2:
+  libx11:
+    buildable: false
     externals:
       - prefix: /usr
-        spec: libxml2@2.9.1%gcc
+        spec: libx11@6.3.0
+  libxext:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libxext@6.4.0
+  libxft:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libxft@2.3.2
+  libxml2:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libxml2@2.9.1
+  libxpm:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libxpm@4.11.0
+  libxt:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: libxt@6.0.0
   lua:
     externals:
       - prefix: /opt/psi/Programming/lua/5.1.4.5
         spec: lua@5.1.4.5
   lz4:
+    buildable: false
     externals:
       - prefix: /usr
         spec: lz4@1.9.3
   m4:
+    buildable: false
     externals:
       - prefix: /usr
         spec: m4@1.4.16
@@ -212,6 +317,7 @@ packages:
       - prefix: /opt/psi/Programming/nasm/2.15.05
         spec: nasm@2.15.05
   ncurses:
+    buildable: false
     externals:
       - prefix: /usr
         spec: ncurses@5.9.20130511
@@ -228,9 +334,15 @@ packages:
       - prefix: /opt/psi/HDF5_serial/netcdf/4.6.1/hdf5_serial/1.10.3/gcc/7.3.0
         spec: netcdf-fortran@4.6.1%gcc@7.3.0
   nlohmann-json:
+    buildable: false
     externals:
       - prefix: /usr
-        spec: nlohmann-json
+        spec: nlohmann-json@3.10.5
+  numactl:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: numactl@2.0.14
   openjdk:
     externals:
       - prefix: /opt/psi/Programming/Java/15u36/bin
@@ -242,6 +354,7 @@ packages:
       - prefix: /opt/psi/Compiler/openmpi/4.1.3_slurm/intel/20.4
         spec: openmpi@4.1.3%intel@20.4
   openssh:
+    buildable: false
     externals:
       - prefix: /usr
         spec: openssh@7.4p1
@@ -252,6 +365,7 @@ packages:
       - prefix: /usr
         spec: openssl@1.0.2k-fips
   pcre:
+    buildable: false
     externals:
       - prefix: /usr
         spec: pcre@8.32
@@ -260,6 +374,7 @@ packages:
       - prefix: /opt/psi/Programming/perl/5.30.0
         spec: perl@5.30.0+cpanm+threads
   pkg-config:
+    buildable: false
     externals:
       - prefix: /usr
         spec: pkg-config@0.27.1
@@ -272,14 +387,17 @@ packages:
       - prefix: /opt/psi/Programming/R/3.2.5
         spec: r@4.1.1.0
   rsync:
+    buildable: false
     externals:
       - prefix: /usr
         spec: rsync@3.1.2
   ruby:
+    buildable: false
     externals:
       - prefix: /usr
         spec: ruby@2.0.0p648
   sed:
+    buildable: false
     externals:
       - prefix: /usr
         spec: sed@4.2.2
@@ -288,10 +406,12 @@ packages:
       - prefix: /opt/psi/Batchsystem/slurm/21.08.6
         spec: slurm@21.08.6
   subversion:
+    buildable: false
     externals:
       - prefix: /usr
         spec: subversion@1.7.14
   tar:
+    buildable: false
     externals:
       - prefix: /usr
         spec: tar@1.26
@@ -300,6 +420,7 @@ packages:
       - prefix: /opt/psi/Programming/Tcl/8.6.9
         spec: tcl@8.6.9
   texinfo:
+    buildable: false
     externals:
       - prefix: /usr
         spec: texinfo@5.1
@@ -311,11 +432,18 @@ packages:
     externals:
       - prefix: /opt/psi/Libraries/ucx/1.9.0
         spec: ucx@1.9.0
+  xerces-c:
+    buildable: false
+    externals:
+      - prefix: /usr
+        spec: xerces-c@3.1
   xz:
+    buildable: false
     externals:
       - prefix: /usr
         spec: xz@5.2.2
   zlib:
+    buildable: false
     externals:
       - prefix: /usr
         spec: zlib@1.2.7
\ No newline at end of file