Subject: Failing: guix package -i gtkmm@3

From: Dale Mellor <[email-masked]>
Date: Wed, 26 Jan 2022 22:24:01 +0000

The above command produces

The following package will be installed:
   gtkmm 3.24.5

guix package: error: profile contains conflicting entries for libsigc++
guix package: error:   first entry: [email-masked] /gnu/store/ng4k2yl94d758p5vnashd4nvyb1aw8s1-libsigc++-3.0.6
guix package: error:    ... propagated from [email-masked]
guix package: error:    ... propagated from [email-masked]
guix package: error:   second entry: [email-masked] /gnu/store/iad8jg1fm7jsq0pqj547f3n5s2jn9rp0-libsigc++-2.9.3
guix package: error:    ... propagated from [email-masked]
guix package: error:    ... propagated from [email-masked]
guix package: error:    ... propagated from [email-masked]
hint: You cannot have two different versions or variants of `gtkmm' in the same profile.