4 files changed, 25 insertions, 17 deletions
diff --git a/etc/spack/defaults/config.yaml b/etc/spack/defaults/config.yaml
index d1a7f35a6d..61c23f42df 100644
--- a/etc/spack/defaults/config.yaml
+++ b/etc/spack/defaults/config.yaml
@@ -107,7 +107,7 @@ config:
   # If set to true, Spack will attempt to build any compiler on the spec
   # that is not already available. If set to False, Spack will only use
   # compilers already configured in compilers.yaml
-  install_missing_compilers: False
+  install_missing_compilers: false
 
 
   # If set to true, Spack will always check checksums after downloading
@@ -115,6 +115,11 @@ config:
   checksum: true
 
 
+  # If set to true, Spack will fetch deprecated versions without warning.
+  # If false, Spack will raise an error when trying to install a deprecated version.
+  deprecated: false
+
+
   # If set to true, `spack install` and friends will NOT clean
   # potentially harmful variables from the build environment. Use wisely.
   dirty: false
@@ -137,11 +142,13 @@ config:
   locks: true
 
 
-  # The maximum number of jobs to use when running `make` in parallel,
-  # always limited by the number of cores available. For instance:
-  # - If set to 16 on a 4 cores machine `spack install` will run `make -j4`
-  # - If set to 16 on a 18 cores machine `spack install` will run `make -j16`
-  # If not set, Spack will use all available cores up to 16.
+  # The maximum number of jobs to use for the build system (e.g. `make`), when
+  # the -j flag is not given on the command line. Defaults to 16 when not set.
+  # Note that the maximum number of jobs is limited by the number of cores
+  # available, taking thread affinity into account when supported. For instance:
+  # - With `build_jobs: 16` and 4 cores available `spack install` will run `make -j4`
+  # - With `build_jobs: 16` and 32 cores available `spack install` will run `make -j16`
+  # - With `build_jobs: 2` and 4 cores available `spack install -j6` will run `make -j6`
   # build_jobs: 16
 
 
diff --git a/etc/spack/defaults/darwin/packages.yaml b/etc/spack/defaults/darwin/packages.yaml
index 948e90ea5a..8ce443a9fd 100644
--- a/etc/spack/defaults/darwin/packages.yaml
+++ b/etc/spack/defaults/darwin/packages.yaml
@@ -25,6 +25,8 @@ packages:
       - libelf
       unwind:
       - apple-libunwind
+      uuid:
+      - apple-libuuid
   apple-libunwind:
     buildable: false
     externals:
@@ -32,3 +34,10 @@ packages:
     # although the version number used here isn't critical
     - spec: apple-libunwind@35.3
       prefix: /usr
+  apple-libuuid:
+    buildable: false
+    externals:
+    # Apple bundles libuuid in libsystem_c version 1353.100.2,
+    # although the version number used here isn't critical
+    - spec: apple-libuuid@1353.100.2
+      prefix: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
diff --git a/etc/spack/defaults/modules.yaml b/etc/spack/defaults/modules.yaml
index 5ae1b50fda..d6d245930c 100644
--- a/etc/spack/defaults/modules.yaml
+++ b/etc/spack/defaults/modules.yaml
@@ -25,16 +25,6 @@ modules:
       - MANPATH
     share/aclocal:
       - ACLOCAL_PATH
-    lib:
-      - LIBRARY_PATH
-    lib64:
-      - LIBRARY_PATH
-    include:
-      - C_INCLUDE_PATH
-      - CPLUS_INCLUDE_PATH
-      # The INCLUDE env variable specifies paths to look for
-      # .mod file for Intel Fortran compilers
-      - INCLUDE
     lib/pkgconfig:
       - PKG_CONFIG_PATH
     lib64/pkgconfig:
diff --git a/etc/spack/defaults/packages.yaml b/etc/spack/defaults/packages.yaml
index 06aa41b2d8..77cbe57ffa 100644
--- a/etc/spack/defaults/packages.yaml
+++ b/etc/spack/defaults/packages.yaml
@@ -23,7 +23,7 @@ packages:
       daal: [intel-daal]
       elf: [elfutils]
       fftw-api: [fftw, amdfftw]
-      gl: [mesa+opengl, mesa18+opengl, opengl]
+      gl: [mesa+opengl, mesa18, opengl]
       glx: [mesa+glx, mesa18+glx, opengl]
       glu: [mesa-glu, openglu]
       golang: [gcc]
@@ -49,6 +49,8 @@ packages:
       unwind: [libunwind]
       yacc: [bison, byacc]
       flame: [libflame, amdlibflame]
+      uuid: [util-linux-uuid, libuuid]
+      ziglang: [zig]
     permissions:
       read: world
       write: user