There is no xclock package in guix. I made it. How can I add it to duix package, maybe in xdisorg.scm.
(use-modules (guix packages) (guix download) (gnu packages pkg-config) (gnu packages xorg) (guix build-system gnu) ((guix licenses) #:prefix license:)) (package (name "xclock") (version "1.0.7") (source (origin (method url-fetch) (uri (string-append "https://www.x.org/releases/individual/app/" name "-" version ".tar.bz2")) (sha256 (base32 "1l3xv4bsca6bwxx73jyjz0blav86i7vwffkhdb1ac81y9slyrki3")))) (build-system gnu-build-system) (arguments `(#:configure-flags (list (string-append "--with-appdefaultdir=" %output ,%app-defaults-dir)))) (inputs `(("libxmu" ,libxmu) ("libx11" ,libx11) ("libxaw" ,libxaw) ("libxrender" ,libxrender) ("libxft" ,libxft) ("libxkbfile" ,libxkbfile))) (native-inputs `(("pkg-config" ,pkg-config))) (home-page "https://www.x.org/") (synopsis "analog / digital clock for X") (description "The xclock program displays the time in analog or digital form. The time is continuously updated at a frequency which may be specified by the user.") (license license:x11))