datepicker

 1(list (channel
 2        (name 'guix)
 3        (url "https://git.savannah.gnu.org/git/guix.git")
 4        (branch "master")
 5        (commit
 6          "41e192c922ec4747e399ee956f162602b6391edd")
 7        (introduction
 8          (make-channel-introduction
 9            "9edb3f66fd807b096b48283debdcddccfea34bad"
10            (openpgp-fingerprint
11              "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))