Add more documentation for the keys of package-vc-selected-packages.

* doc/emacs/package.texi (Specifying Package Sources): List the
accepted keys in a new subsection of Fetching Package Sources.

* lisp/emacs-lisp/package-vc.el (package-vc-selected-packages):
Mention the `:doc` key.  Add the `:doc` key to the Customize form,
mention the new Info node, correct "TexInfo" to "Texinfo", avoid
Git-specific terms for the description of `:branch`, mention guessing
`:vc-backend` based on the URL.
This commit is contained in:
Earl Hyatt 2023-03-27 20:57:31 -04:00 committed by Philip Kaludercic
parent 7972b76c2c
commit 6e6e8b5c97
2 changed files with 81 additions and 26 deletions

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@ -578,3 +578,80 @@ from the package directory (@pxref{Package Files}) to your checkout
and initializes the code. Note that you might have to use
@code{package-vc-refresh} to repeat the initialization and update the
autoloads.
@subsection Specifying Package Sources
@cindex package specification
@cindex specification, for source packages
To install a package from source, Emacs must know where to get the
package's source code (such as a code repository) and basic
information about the structure of the code (such as the main file in
a multi-file package). A @dfn{package specification} describes these
properties.
When supported by a package archive (@pxref{Package
Archives,,,elisp, The Emacs Lisp Reference Manual}), Emacs can
automatically download a package's specification from said archive.
If the first argument passed to @code{package-vc-install} is a symbol
naming a package, then Emacs will use the specification provided by
the archive for that package.
@example
@group
;; Emacs will download BBDB's specification from GNU ELPA:
(package-vc-install 'bbdb)
@end group
@end example
The first argument to @code{package-vc-install} may also be a
package specification. This allows you to install source packages
from locations other than the known archives listed in the user option
@code{package-archives}. A package specification is a list of the
form @code{(@var{name} . @var{spec})}, in which @var{spec} should be a
property list using any of the keys in the table below.
For definitions of basic terms for working with code repositories and
version control systems, see @ref{VCS Concepts,,,emacs, The GNU Emacs
Manual}.
@table @code
@item :url
A string providing the URL that specifies the repository from which to
fetch the package's source code.
@item :branch
A string providing the revision of the code to install. Do not
confuse this with a package's version number.
@item :lisp-dir
A string providing the repository-relative name of the directory to
use for loading the Lisp sources, which defaults to the root directory
of the repository.
@item :main-file
A string providing the main file of the project, from which to gather
package metadata. If not given, the default is the package name with
".el" appended to it.
@item :doc
A string providing the repository-relative name of the documentation
file from which to build an Info file. This can be a Texinfo file or
an Org file.
@item :vc-backend
A symbol naming the VC backend to use for downloading a copy of the
package's repository (@pxref{Version Control Systems,,,emacs, The GNU
Emacs Manual}). If omitted, Emacs will attempt to make a guess based
on the provided URL, or, failing that, the process will fall back onto
the value of @code{package-vc-default-backend}.
@end table
@example
@group
;; Specifying information manually:
(package-vc-install
'(bbdb :url "https://git.savannah.nongnu.org/git/bbdb.git"
:lisp-dir "lisp"
:doc "doc/bbdb.texi"))
@end group
@end example

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@ -142,32 +142,9 @@ is a symbol designating the package and SPEC is one of:
- nil, if any package version can be installed;
- a version string, if that specific revision is to be installed;
- a property list, describing a package specification. Valid
key/value pairs are
`:url' (string)
The URL of the repository used to fetch the package source.
`:branch' (string)
If given, the name of the branch to checkout after cloning the directory.
`:lisp-dir' (string)
The repository-relative name of the directory to use for loading the Lisp
sources. If not given, the value defaults to the root directory
of the repository.
`:main-file' (string)
The main file of the project, relevant to gather package metadata.
If not given, the assumed default is the package name with \".el\"
appended to it.
`:vc-backend' (symbol)
A symbol of the VC backend to use for cloning the package. The
value ought to be a member of `vc-handled-backends'. If omitted,
`vc-clone' will fall back onto the archive default or on
`package-vc-default-backend'.
All other keys are ignored.
- a property list, describing a package specification. For more
details, please consult the subsection \"Specifying Package
Sources\" in the Info node `(emacs)Fetching Package Sources'.
This user option will be automatically updated to store package
specifications for packages that are not specified in any
@ -181,6 +158,7 @@ archive."
(:branch string)
(:lisp-dir string)
(:main-file string)
(:doc string)
(:vc-backend symbol)))))
:version "29.1")