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authorHartmut Goebel <h.goebel@crazy-compilers.com>2022-08-28 15:00:52 +0200
committerHartmut Goebel <h.goebel@crazy-compilers.com>2022-12-26 17:38:07 +0100
commit7c476873e0300711bf92668cf01abd28f7295ead (patch)
treed80d2c691d971e61e23f2e584ac47b4e2727d719 /doc/guix.texi
parentf7eaed685842769ffa3f77b62d4d604f110e62a3 (diff)
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doc: Describe how to update to a specific version.
* doc/guix.texi (Invoking guix refresh): Describe how to update to a specific version.
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diff --git a/doc/guix.texi b/doc/guix.texi
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--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -13934,6 +13934,25 @@ gnu/packages/multiprecision.scm:40:12: 6.1.2 is already the latest version of gm
@end table
+If for some reason you don't want to update to the latest version, you
+can update to a specific version by appending an equal sign and the
+desired version number to the package specification. Note that not all
+updaters support this; an error is reported when an updater cannot
+refresh to the specified version.
+
+@example
+$ guix refresh trytond-party
+gnu/packages/guile.scm:392:2: guile would be upgraded from 3.0.3 to 3.0.5
+$ guix refresh -u guile=3.0.4
+@dots{}
+gnu/packages/guile.scm:392:2: guile: updating from version 3.0.3 to version 3.0.4...
+@dots{}
+$ guix refresh -u guile@@2.0=2.0.12
+@dots{}
+gnu/packages/guile.scm:147:2: guile: updating from version 2.0.10 to version 2.0.12...
+@dots{}
+@end example
+
Sometimes the upstream name differs from the package name used in Guix,
and @command{guix refresh} needs a little help. Most updaters honor the
@code{upstream-name} property in package definitions, which can be used