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package!: improve docstring & add :needs property

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This commit is contained in:
Henrik Lissner 2017-02-03 20:10:40 -05:00
parent 10d46b3dc0
commit cdeab2c292
1 changed files with 28 additions and 16 deletions
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20
core/core-packages.el
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@ -179,12 +179,24 @@ packages are deferred by default."
(defmacro package! (name &rest plist)
"Wraps around `use-package' to declare a deferred package (unless otherwise
indicated), takes the same arguments, but adds the :recipe property, which takes
a MELPA recipe. Also binds `__PACKAGE__` for PLIST forms to optionally use."
indicated), takes the same arguments, but adds a few custom properties:
:recipe RECIPE Takes a MELPA-style recipe (see `quelpa-recipe' for an
example); for packages to be installed from external
sources.
:pin ARCHIVE-NAME Instructs ELPA to only look for this package in
ARCHIVE-NAME. e.g. \"org\".
:needs FEATURE Don't install this package if FEATURE isn't available.
Also binds `__PACKAGE__` for PLIST forms to optionally use."
(declare (indent defun))
(let ((recipe (cadr (memq :recipe plist)))
(pin (cadr (memq :pin plist)))
(lpath (cadr (memq :load-path plist))))
(lpath (cadr (memq :load-path plist)))
(dep (cadr (memq :needs plist))))
(when (or (not dep)
(or (featurep dep)
(package-installed-p dep)))
(when (and recipe (= 0 (mod (length recipe) 2)))
(push name recipe))
(if (not lpath)
@ -197,7 +209,7 @@ a MELPA recipe. Also binds `__PACKAGE__` for PLIST forms to optionally use."
(setq plist (use-package-plist-delete plist :recipe))
(setq plist (use-package-plist-delete plist :pin))
(unless doom-dont-load-p
`(use-package! ,name ,@plist))))
`(use-package! ,name ,@plist)))))
(defmacro require! (feature)
"Like `require', but will prefer uncompiled files if `doom-prefer-el-p' is