* bug#14632: 24.3.50; package-install-p returns nil after package-install
@ 2013-06-16 8:47 Sebastian Wiesner
2013-06-18 1:27 ` Stefan Monnier
0 siblings, 1 reply; 2+ messages in thread
From: Sebastian Wiesner @ 2013-06-16 8:47 UTC (permalink / raw)
To: 14632
After "package-install", "package-installed-p" still returns nil for
the package that was just installed. Consider:
ELISP> (package-installed-p 'nrepl)
nil
ELISP> (package-install (cdr (assq 'nrepl package-archive-contents)))
nil
ELISP> (package-installed-p 'nrepl)
nil
ELISP> (package-initialize)
t
ELISP> (package-installed-p 'nrepl)
t
Also, before "package-initialize", the newly installed "nrepl" package
still only appears as "available" in "M-x list-packages", but not as
"installable".
Even worse, dependency resolution is broken, likely as a result of this
misbehavior of "package-installed-p". Consider "hardhat" and
"ignoramus", where "hardhat" depends on "ignoramus". If I explicitly
install "ignoramus", "hardhat" cannot be installed afterwards:
ELISP> (package-installed-p 'ignoramus)
nil
ELISP> (package-installed-p 'hardhat)
nil
ELISP> (cdr (assq 'hardhat package-archive-contents))
[cl-struct-package-desc hardhat
(20130522 1243)
"Protect against clobbering user-writable
files [github]"
((ignoramus
(0 6 2)))
single "melpa" nil]
ELISP> (package-install (cdr (assq 'ignoramus package-archive-contents)))
nil
ELISP> (package-install (cdr (assq 'hardhat package-archive-contents)))
*** Eval error *** File exists:
/Users/swiesner/.emacs.d/elpa/ignoramus-20130522.1245/ignoramus-pkg.el
ELISP> (package-initialize)
t
ELISP> (package-installed-p 'ignoramus)
t
ELISP> (package-install (cdr (assq 'hardhat package-archive-contents)))
nil
As you can see, when installing "hardhat", package.el still attempts
to install ignoramus though this package is already installed. Only
after re-initializing package.el, the ignoramus installation is
detected, and hardhat can be installed.
The packages mentioned in this mail are from the MELPA archive [1],
simply because I hit this bug with these packages, and was too lazy to
reproduce it with packages from the GNU ELPA archive. I don't think
that the archive matters, though.
[1]: http://melpa.milkbox.net/
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2013-06-16 8:47 bug#14632: 24.3.50; package-install-p returns nil after package-install Sebastian Wiesner
2013-06-18 1:27 ` Stefan Monnier
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