Environments: specify packages for developer builds (#15256)

* allow environments to specify dev-build packages

* spack develop and spack undevelop commands

* never pull dev-build packges from bincache

* reinstall dev_specs when code has changed; reinstall dependents too

* preserve dev info paths and versions in concretization as special variant

* move install overwrite transaction into installer

* move dev-build argument handling to package.do_install

now that specs are dev-aware, package.do_install can add
necessary args (keep_stage=True, use_cache=False) to dev
builds. This simplifies driving logic in cmd and env._install

* allow 'any' as wildcard for variants

* spec: allow anonymous dependencies

raise an error when constraining by or normalizing an anonymous dep
refactor concretize_develop to remove dev_build variant
refactor tests to check for ^dev_path=any instead of +dev_build

* fix variant class hierarchy

1 files changed, 19 insertions, 1 deletions

diff --git a/share/spack/spack-completion.bash b/share/spack/spack-completion.bash
index 6b4b83b489..17bac4034f 100755
--- a/share/spack/spack-completion.bash
+++ b/share/spack/spack-completion.bash
@@ -320,7 +320,7 @@ _spack() {
     then
         SPACK_COMPREPLY="-h --help -H --all-help --color -C --config-scope -d --debug --timestamp --pdb -e --env -D --env-dir -E --no-env --use-env-repo -k --insecure -l --enable-locks -L --disable-locks -m --mock -p --profile --sorted-profile --lines -v --verbose --stacktrace -V --version --print-shell-vars"
     else
-        SPACK_COMPREPLY="activate add arch blame build-env buildcache cd checksum ci clean clone commands compiler compilers concretize config containerize create deactivate debug dependencies dependents deprecate dev-build docs edit env extensions external fetch find flake8 gc gpg graph help info install license list load location log-parse maintainers mirror module patch pkg providers pydoc python reindex remove rm repo resource restage setup spec stage test uninstall unload url verify versions view"
+        SPACK_COMPREPLY="activate add arch blame build-env buildcache cd checksum ci clean clone commands compiler compilers concretize config containerize create deactivate debug dependencies dependents deprecate dev-build develop docs edit env extensions external fetch find flake8 gc gpg graph help info install license list load location log-parse maintainers mirror module patch pkg providers pydoc python reindex remove rm repo resource restage setup spec stage test undevelop uninstall unload url verify versions view"
     fi
 }
 
@@ -725,6 +725,15 @@ _spack_dev_build() {
     fi
 }
 
+_spack_develop() {
+    if $list_options
+    then
+        SPACK_COMPREPLY="-h --help -p --path --no-clone --clone -f --force"
+    else
+        _all_packages
+    fi
+}
+
 _spack_docs() {
     SPACK_COMPREPLY="-h --help"
 }
@@ -1482,6 +1491,15 @@ _spack_test() {
     fi
 }
 
+_spack_undevelop() {
+    if $list_options
+    then
+        SPACK_COMPREPLY="-h --help -a --all"
+    else
+        _all_packages
+    fi
+}
+
 _spack_uninstall() {
     if $list_options
     then