Add -j option to spack compiler find

lib/spack/spack/cmd/compiler.py

@@ -50,6 +50,7 @@ def setup_parser(subparser):
         default=lambda: spack.config.default_modify_scope("compilers"),
         help="configuration scope to modify",
     )
+    arguments.add_common_arguments(find_parser, ["jobs"])
 
     # Remove
     remove_parser = sp.add_parser("remove", aliases=["rm"], help="remove compiler by spec")
@@ -84,7 +85,7 @@ def compiler_find(args):
     if new_compilers:
         n = len(new_compilers)
         s = "s" if n > 1 else ""
-        filename = spack.config.CONFIG.get_config_filename(args.scope, "compilers")
+        filename = spack.config.CONFIG.get_config_filename(args.scope, "packages")
         tty.msg(f"Added {n:d} new compiler{s} to {filename}")
         compiler_strs = sorted(f"{c.spec}" for c in new_compilers)
         colify(reversed(compiler_strs), indent=4)

lib/spack/spack/compilers/__init__.py

@@ -271,6 +271,7 @@ def find_compilers(
     *,
     scope: Optional[str] = None,
     mixed_toolchain: bool = False,
+    max_workers: Optional[int] = None,
 ) -> List["spack.compiler.Compiler"]:
     """Searches for compiler in the paths given as argument. If any new compiler is found, the
     configuration is updated, and the list of new compiler objects is returned.
@@ -281,14 +282,14 @@ def find_compilers(
         scope: configuration scope to modify
         mixed_toolchain: allow mixing compilers from different toolchains if otherwise missing for
             a certain language
+        max_workers: number of processes used to search for compilers
     """
-    # TODO: pass max_workers to this function
     if path_hints is None:
         path_hints = get_path("PATH")
     default_paths = fs.search_paths_for_executables(*path_hints)
     compiler_pkgs = spack.repo.PATH.packages_with_tags(COMPILER_TAG, full=True)
     detected_packages = spack.detection.by_path(
-        compiler_pkgs, path_hints=default_paths, max_workers=1
+        compiler_pkgs, path_hints=default_paths, max_workers=max_workers
     )
     new_compilers = spack.detection.update_configuration(
         detected_packages, buildable=True, scope=scope

share/spack/spack-completion.bash

@@ -752,7 +752,7 @@ _spack_compiler() {
 _spack_compiler_find() {
     if $list_options
     then
-        SPACK_COMPREPLY="-h --help --mixed-toolchain --no-mixed-toolchain --scope"
+        SPACK_COMPREPLY="-h --help --mixed-toolchain --no-mixed-toolchain --scope -j --jobs"
     else
         SPACK_COMPREPLY=""
     fi
@@ -761,7 +761,7 @@ _spack_compiler_find() {
 _spack_compiler_add() {
     if $list_options
     then
-        SPACK_COMPREPLY="-h --help --mixed-toolchain --no-mixed-toolchain --scope"
+        SPACK_COMPREPLY="-h --help --mixed-toolchain --no-mixed-toolchain --scope -j --jobs"
     else
         SPACK_COMPREPLY=""
     fi

share/spack/spack-completion.fish

@@ -1059,7 +1059,7 @@ complete -c spack -n '__fish_spack_using_command compiler' -s h -l help -f -a he
 complete -c spack -n '__fish_spack_using_command compiler' -s h -l help -d 'show this help message and exit'
 
 # spack compiler find
-set -g __fish_spack_optspecs_spack_compiler_find h/help mixed-toolchain no-mixed-toolchain scope=
+set -g __fish_spack_optspecs_spack_compiler_find h/help mixed-toolchain no-mixed-toolchain scope= j/jobs=
 
 complete -c spack -n '__fish_spack_using_command compiler find' -s h -l help -f -a help
 complete -c spack -n '__fish_spack_using_command compiler find' -s h -l help -d 'show this help message and exit'
@@ -1069,9 +1069,11 @@ complete -c spack -n '__fish_spack_using_command compiler find' -l no-mixed-tool
 complete -c spack -n '__fish_spack_using_command compiler find' -l no-mixed-toolchain -d '(DEPRECATED) Do not allow mixed toolchains (for example: clang, clang++, gfortran)'
 complete -c spack -n '__fish_spack_using_command compiler find' -l scope -r -f -a '_builtin defaults system site user command_line'
 complete -c spack -n '__fish_spack_using_command compiler find' -l scope -r -d 'configuration scope to modify'
+complete -c spack -n '__fish_spack_using_command compiler find' -s j -l jobs -r -f -a jobs
+complete -c spack -n '__fish_spack_using_command compiler find' -s j -l jobs -r -d 'explicitly set number of parallel jobs'
 
 # spack compiler add
-set -g __fish_spack_optspecs_spack_compiler_add h/help mixed-toolchain no-mixed-toolchain scope=
+set -g __fish_spack_optspecs_spack_compiler_add h/help mixed-toolchain no-mixed-toolchain scope= j/jobs=
 
 complete -c spack -n '__fish_spack_using_command compiler add' -s h -l help -f -a help
 complete -c spack -n '__fish_spack_using_command compiler add' -s h -l help -d 'show this help message and exit'
@@ -1081,6 +1083,8 @@ complete -c spack -n '__fish_spack_using_command compiler add' -l no-mixed-toolc
 complete -c spack -n '__fish_spack_using_command compiler add' -l no-mixed-toolchain -d '(DEPRECATED) Do not allow mixed toolchains (for example: clang, clang++, gfortran)'
 complete -c spack -n '__fish_spack_using_command compiler add' -l scope -r -f -a '_builtin defaults system site user command_line'
 complete -c spack -n '__fish_spack_using_command compiler add' -l scope -r -d 'configuration scope to modify'
+complete -c spack -n '__fish_spack_using_command compiler add' -s j -l jobs -r -f -a jobs
+complete -c spack -n '__fish_spack_using_command compiler add' -s j -l jobs -r -d 'explicitly set number of parallel jobs'
 
 # spack compiler remove
 set -g __fish_spack_optspecs_spack_compiler_remove h/help a/all scope=