Merge branch 'develop' into f/env-location

etc/spack/defaults/bootstrap.yaml

@@ -9,16 +9,15 @@ bootstrap:
   # may not be able to bootstrap all the software that Spack needs,
   # depending on its type.
   sources:
+  - name: 'github-actions-v0.4'
+    metadata: $spack/share/spack/bootstrap/github-actions-v0.4
   - name: 'github-actions-v0.3'
     metadata: $spack/share/spack/bootstrap/github-actions-v0.3
-  - name: 'github-actions-v0.2'
-    metadata: $spack/share/spack/bootstrap/github-actions-v0.2
-  - name: 'github-actions-v0.1'
-    metadata: $spack/share/spack/bootstrap/github-actions-v0.1
   - name: 'spack-install'
     metadata: $spack/share/spack/bootstrap/spack-install
   trusted:
     # By default we trust bootstrapping from sources and from binaries
     # produced on Github via the workflow
+    github-actions-v0.4: true
     github-actions-v0.3: true
     spack-install: true

etc/spack/defaults/concretizer.yaml

@@ -33,4 +33,4 @@ concretizer:
   # environments can always be activated. When "false" perform concretization separately
   # on each root spec, allowing different versions and variants of the same package in
   # an environment.
-  unify: false
+  unify: true

etc/spack/defaults/config.yaml

@@ -191,10 +191,20 @@ config:
   package_lock_timeout: null
 
 
-  # Control whether Spack embeds RPATH or RUNPATH attributes in ELF binaries.
-  # Has no effect on macOS. DO NOT MIX these within the same install tree.
-  # See the Spack documentation for details.
-  shared_linking: 'rpath'
+  # Control how shared libraries are located at runtime on Linux. See the
+  # the Spack documentation for details.
+  shared_linking:
+    # Spack automatically embeds runtime search paths in ELF binaries for their
+    # dependencies. Their type can either be "rpath" or "runpath". For glibc, rpath is
+    # inherited and has precedence over LD_LIBRARY_PATH; runpath is not inherited
+    # and of lower precedence. DO NOT MIX these within the same install tree.
+    type: rpath
+
+
+    # (Experimental) Embed absolute paths of dependent libraries directly in ELF
+    # binaries to avoid runtime search. This can improve startup time of
+    # executables with many dependencies, in particular on slow filesystems.
+    bind: false
 
 
   # Set to 'false' to allow installation on filesystems that doesn't allow setgid bit
@@ -205,3 +215,7 @@ config:
   # building and installing packages. This gives information about Spack's
   # current progress as well as the current and total number of packages.
   terminal_title: false
+
+  # Number of seconds a buildcache's index.json is cached locally before probing
+  # for updates, within a single Spack invocation. Defaults to 10 minutes.
+  binary_index_ttl: 600

etc/spack/defaults/packages.yaml

@@ -27,7 +27,8 @@ packages:
       fuse: [libfuse]
       gl: [glx, osmesa]
       glu: [mesa-glu, openglu]
-      golang: [gcc]
+      golang: [go, gcc]
+      go-external-or-gccgo-bootstrap: [go-bootstrap, gcc]
       iconv: [libiconv]
       ipp: [intel-ipp]
       java: [openjdk, jdk, ibm-java]

etc/spack/defaults/windows/config.yaml

@@ -1,5 +1,5 @@
 config:
   locks: false
-  concretizer: original
+  concretizer: clingo
   build_stage::
     - '$spack/.staging'