guix build: Record package transformations in manifest entries.

With this change, package transformation options used while building a
manifest are saved in the metadata of the manifest entries.

* guix/scripts/build.scm (transformation-procedure): New procedure.
(options->transformation)[applicable]: Use it.  Change to a list of
key/value/proc tuples instead of key/proc pairs.
[package-with-transformation-properties, tagged-object]: New
procedures.  Use them.
(package-transformations, manifest-entry-with-transformations): New
procedures.
* guix/scripts/pack.scm (guix-pack)[with-transformations]: New
procedure.
Use it.
* guix/scripts/package.scm (process-actions)[transform-entry]: Use it.
* tests/guix-package-aliases.sh: Add test.

0 files changed, 0 insertions, 0 deletions