Nix package manager on Guix

                  (supplementary-groups
                    '("wheel" "netdev" "audio" "video")))
    (user-account
    (name "nixbld1")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld2")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld3")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld4")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld5")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld6")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld7")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld8")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld9")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))

    (user-account
    (name "nixbld10")
    (comment "")
    (group "nixbld")
    (supplementary-groups
    '("nixbld"))
    (create-home-directory? #f)
    (shell "$(which nologin)")
    (system? #t))
              %base-user-accounts))

  (groups (cons* (user-group
    (name "nixbld"))
    %base-groups))
  (packages
    (append
    (map specification->package
        '("nss-certs" "nix" "rsync" "evolution"
          "evolution-data-server" "icecat" "tcpdump" "instantmusic"
          "ffmpeg" "libreoffice" "gnome-screenshot" "geany"
          "u-boot-tools" "gnupg" "gpa" "gnucash" "wget2"
          ))
      %base-packages))
  (services
    (append
      (list (service gnome-desktop-service-type)
            (service tor-service-type)
            (service openssh-service-type)
        (service rsync-service-type)
        (set-xorg-configuration
            (xorg-configuration
                (keyboard-layout keyboard-layout))))
            %desktop-services)))

3) You need to append the following code to ~/.bashrc and /root/.bashrc.

After the code is added, you will need to launch a new terminal window to see "echo "creating $HOME/.nix-defexpr""

export GUIX_LOCPATH="$HOME/.guix-profile/lib/locale"
export NODE_PATH="/home/user/.guix-profile/lib/node_modules${NODE_PATH:+:}$NODE_PATH"
export NIX_REMOTE=daemon
export C_INCLUDE_PATH="/home/user/.guix-profile/include${C_INCLUDE_PATH:+:}$C_INCLUDE_PATH"
export CPLUS_INCLUDE_PATH="/home/user/.guix-profile/include${CPLUS_INCLUDE_PATH:+:}$CPLUS_INCLUDE_PATH"
export LIBRARY_PATH="/home/user/.guix-profile/lib${LIBRARY_PATH:+:}$LIBRARY_PATH"
export NIX_PROFILES="/nix/var/nix/profiles/default $HOME/.nix-profile"
for i in $NIX_PROFILES; do
    export PATH="${PATH}:${i}/bin"
done
export PATH="/home/user/.config/guix/current/bin${PATH:+:}${PATH}"
if [ ! -e $HOME/.nix-defexpr -o -L $HOME/.nix-defexpr ]; then
    echo "creating $HOME/.nix-defexpr" >&2
    rm -f $HOME/.nix-defexpr
    mkdir $HOME/.nix-defexpr
    if [ "$USER" != root ]; then
        ln -s /nix/var/nix/profiles/per-user/root/channels \
          $HOME/.nix-defexpr/channels_root
    fi
fi

if test "$USER" != root; then
    export NIX_REMOTE=daemon
else
    export NIX_REMOTE=
fi