Two linux users, each has different packages available

[Richmond]

I have two different linux users on my system. (Debian 11 x86). One has
icecat 102 installed, the other icecat 78. I cannot upgrade the user
with 78. The 102 version doesn't seem to be available.

On the first user:

guix package -A icecat
icecat    78.4.0-guix0-preview1    out    gnu/packages/gnuzilla.scm:725:2

On the other user:

guix package -A icecat
icecat            102.14.0-guix0-preview1    out                    
gnu/packages/gnuzilla.scm:1708:4
icecat-l10n       102.14.0-guix0-preview1   
out,ach,af,an,ar,ast,az,be,bg,bn,br,bs,ca,cak,ca-valencia,cs,cy,da,de,dsb,el,en-CA,en-GB,eo,es-AR,es-CL,es-ES,es-MX,et,eu,fa,ff,fi,fr,fy-NL,ga-IE,gd,gl,gn,gu-IN,he,hi-IN,hr,hsb,hu,hy-AM,ia,id,is,it,ja,ja-JP-mac,ka,kab,kk,km,kn,ko,lij,lt,lv,mk,mr,ms,my,nb-NO,ne-NP,nl,nn-NO,oc,pa-IN,pl,pt-BR,pt-PT,rm,ro,ru,sco,si,sk,sl,son,sq,sr,sv-SE,szl,ta,te,th,tl,tr,trs,uk,ur,uz,vi,xh,zh-CN,zh-TW
   
gnu/packages/gnuzilla.scm:1583:4
icecat-minimal    102.14.0-guix0-preview1    out                    
gnu/packages/gnuzilla.scm:694:2

How did this come about? I think I have possibly created an environment
by accident. But I don't know how to show it or remove it.

<bewildered>