Icecat not substituted

[Andreas Enge]

Hello,

when issueing
   guix package -u icecat -n
I see:

The following package would be upgraded:                       
   icecat       31.2.0 → 31.2.0 
/gnu/store/rsf4pww335qqv7iyss54i8fmwr7kfm83-icecat-31.2.0

The following derivations would be built:
   /gnu/store/wxfxjbbc268gxmbinb0bnckhxq6hik37-profile.drv
   /gnu/store/8lkrvrf0vl8bb4k6nqpsmimga1hyzz2x-icecat-31.2.0.drv
   /gnu/store/5g7kp7cw3r2pj8p013678h7qiic28zk2-info-dir.drv

Other packages are downloaded from hydra, and there is an icecat for x86_64
there. Could this be related to recent changes to force local builds?
But I do not see anything related in the icecat package.

Andreas