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bug#16994: 24.3; package.el dependency ordering incorrect (non-topologic
From: |
Andrew Childs |
Subject: |
bug#16994: 24.3; package.el dependency ordering incorrect (non-topological) |
Date: |
Wed, 12 Mar 2014 16:50:56 +1300 |
package.el does not resolve dependencies in the correct order,
potentially resulting in packages installed before their
dependencies. This was reported in #14082 [1], but not fixed for all
cases. The packages should be arranged in topological order before
installation.
Consider the following package graph, with dependencies flowing left to
right:
C
/ \ X---Z
A D--E \ /
\ / Y
B
Or as an `archive-contents'
(1
(a . [(1) ((b) (c)) "a" nil])
(b . [(1) ((d)) "b" nil])
(c . [(1) ((d)) "c" nil])
(d . [(1) ((e)) "d" nil])
(e . [(1) nil "e" nil])
(x . [(1) ((z) (y)) "x" nil])
(y . [(1) ((z)) "y" nil])
(z . [(1) nil "z" nil])
)
For a, the only valid install orders are (e d b c a) or (e d c b a)
For x, the only valid install order is (z y x)
When installing `a' or `x', the ordering may be incorrect:
emacs-version:
GNU Emacs 24.3.1 (x86_64-apple-darwin13.1.0, NS apple-appkit-1265.19)
of 2014-03-12 on argon.cons.org.nz
[FAIL] install a = (c e d b a)
[FAIL] install x = (y z x)
emacs-version:
GNU Emacs 24.3.50.1 (x86_64-apple-darwin13.1.0, NS apple-appkit-1265.19)
of 2014-03-12 on argon.cons.org.nz
[FAIL] install a = (d c e b a)
[ OK] install x = (z y x)
For convenience, the complete test can be found on github [2].
[1] http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14082
[2] https://gist.github.com/thefloweringash/9500216
Regards,
Andrew
In GNU Emacs 24.3.1 (amd64-portbld-freebsd10.0, Motif Version 2.3.4)
of 2014-01-23 on 10R-amd64-default-job-01
Windowing system distributor `The X.Org Foundation', version 11.0.11404000
Configured using:
`configure '--localstatedir=/var' '--without-compress-info'
'--without-dbus' '--without-gconf' '--with-gif' '--with-gnutls'
'--without-gsettings' '--with-jpeg' '--with-m17n-flt'
'--with-imagemagick' '--with-libotf' '--with-png'
'--with-toolkit-scroll-bars' '--with-sound' '--with-rsvg'
'--with-sync-input' '--with-tiff' '--with-xft' '--with-xim'
'--with-xml2' '--with-xpm' '--with-x-toolkit=motif' '--with-x'
'--x-libraries=/usr/local/lib' '--x-includes=/usr/local/include'
'--prefix=/usr/local' '--mandir=/usr/local/man'
'--infodir=/usr/local/share/emacs/info/'
'--build=amd64-portbld-freebsd10.0'
'build_alias=amd64-portbld-freebsd10.0' 'CC=cc' 'CFLAGS=-O2 -pipe
-fno-strict-aliasing' 'LDFLAGS= -L/usr/local/lib
-Wl,-rpath=/usr/lib:/usr/local/lib' 'CPPFLAGS=-I/usr/local/include'
'CPP=cpp''
Important settings:
value of $LANG: en_NZ.UTF-8
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Fundamental
Minor modes in effect:
tooltip-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
buffer-read-only: t
line-number-mode: t
transient-mark-mode: t
Recent input:
M-x r e p o r t - e m a c s - b u g <return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Load-path shadows:
None found.
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