[nixie@nixos:~/.config/nixpkgs]$ home-manager switch
/nix/store/lcg4n8ca3c380drjxgwmv86n173n58qa-home-manager-generation
Starting home manager activation
Activating checkFilesChanged
Activating checkLinkTargets
Activating writeBoundary
Activating installPackages
replacing old 'home-manager-path'
installing 'home-manager-path'
building '/nix/store/9r0w7wch48qrcf5hil8xh4vjhgn16jrp-user-environment.drv'...
error: packages '/nix/store/k5447y0dd2s1294fpp2cz536mjxxb4k0-git-2.28.0/etc/bash_completion.d/git-prompt.sh' and '/nix/store/57gsbs8hr1bmd6dbb5sdx4c6m4ghzg62-git-2.28.0/etc/bash_completion.d/git-prompt.sh' have the same priority 5; use 'nix-env --set-flag priority NUMBER INSTALLED_PKGNAME' to change the priority of one of the conflicting packages (0 being the highest priority)
builder for '/nix/store/9r0w7wch48qrcf5hil8xh4vjhgn16jrp-user-environment.drv' failed with exit code 1
error: build of '/nix/store/9r0w7wch48qrcf5hil8xh4vjhgn16jrp-user-environment.drv' failed