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diff --git a/doc/guix.texi b/doc/guix.texi
index 25c08b9f06..4eac281a82 100644
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@@ -2039,6 +2039,16 @@ variable, even though, taken individually, neither @file{foo} nor
@itemx -p @var{profile}
Use @var{profile} instead of the user's default profile.
+@cindex collisions, in a profile
+@cindex colliding packages in profiles
+@cindex profile collisions
+@item --allow-collisions
+Allow colliding packages in the new profile. Use at your own risk!
+
+By default, @command{guix package} reports as an error @dfn{collisions}
+in the profile. Collisions happen when two or more different versions
+or variants of a given package end up in the profile.
+
@item --verbose
Produce verbose output. In particular, emit the build log of the
environment on the standard error port.