gistfile1.txt

#!/pseudocode/about/the/idea

###############################################
# code which will be autogenerated

src_install
src_preinst
D=/tmp

die() {
    exit
}

###############################################
# code which will go to .ebuild

# inherit gac

src_install() {
    # default
    gac_src_install()
    
    einstall_pc_file "aa" "0.4" "./data/aa4.dat"
    einstall_pc_file "aa" "0.5" "./data/ab5.dat"
    einstall_pc_file "bb" "0.0.1" "./enc/bb.dat"
}

pkg_preinst() {
    # default
    gac_pkg_preinst()
}

###############################################
# code which will go to .eclass

PC_FILE_LIST=${D}/pc_file_list.txt
separator=$'\t'

gac_src_install() {
    : > "${PC_FILE_LIST}" || die
}

register() {
    printf '%s\0' "$*" >> "${PC_FILE_LIST}" || die
}

gac_pkg_preinst() {
    local IFS=${separator}
    local args
    while IFS=${separator} read -rd '' -a args; do
        local name version relative_path
        name=${args[0]} version=${args[1]} relative_path=${args[2]} # ...
        # echo emulates call to command line tool
        echo "${name}" "${version}" "${relative_path}" # or echo "${args[@]}" || die
        rm "${relative_path}" || die
    done < "${PC_FILE_LIST}"
    rm "${PC_FILE_LIST}" || die
}

# EXPORT_FUNCTIONS src_install pkg_preinst