$ guix package -i hello
The following package will be installed:
   hello        2.10    /gnu/store/bihfrh609gkxb9dp7n96wlpigiv3krfy-hello-2.10

substitute: updating substitutes from 'https://mirror.hydra.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/nznmdn6inpwxnlkrasydmda4s2vsp9hg-profile.drv
   /gnu/store/vibqrvw4c8lacxjrkqyzqsdrmckv77kq-fonts-dir.drv
   /gnu/store/hi8alg7wi0wgfdi3rn8cpp37zhx8ykf3-info-dir.drv
   /gnu/store/cvkbp378cvfjikz7mjymhrimv7j12p0i-ca-certificate-bundle.drv
   /gnu/store/d62fvxymnp95rzahhmhf456bsf0xg1c6-manual-database.drv
Creating manual page database...
1 entries processed in 0.0 s
2 packages in profile
$ hello
Hello, world!