ludo@gnu.org (Ludovic Courtès) writes:

> Otherwise LGTM.  It’s great that you fixed this!  People had reported
> the issue on IRC, so that’ll make them happy!  :-)

I think this is only a partial fix. to launch emacsclient I still need
to do this:

  TERMINFO="$HOME/.guix-profile/share/terminfo" emacsclient --tty foo

in terminfo(5), we can read this:

--8<---------------cut here---------------start------------->8---
Fetching Compiled Descriptions
    The ncurses library  searches  for  terminal  descriptions  in  several
    places.   It  uses only the first description found.  The library has a
    compiled-in list of places to search which can be overridden  by  envi‐
    ronment  variables.   Before  starting  to  search,  ncurses eliminates
    duplicates in its search list.
    
     ·  If the environment variable TERMINFO is set, it is  interpreted  as
        the pathname of a directory containing the compiled description you
        are working on.  Only that directory is searched.
    
     ·  If TERMINFO is not set, ncurses will instead look in the  directory
        $HOME/.terminfo for a compiled description.

     ·  Next,  if  the  environment  variable TERMINFO_DIRS is set, ncurses
        will interpret the contents of that variable as a  list  of  colon-
        separated directories (or database files) to be searched.

        An  empty directory name (i.e., if the variable begins or ends with
        a colon, or contains adjacent colons) is interpreted as the  system
        location /etc/terminfo.

     ·  Finally, ncurses searches these compiled-in locations:
         ·  a list of directories (no default value), and
         ·  the  system  terminfo directory, /etc/terminfo (the compiled-in
            default).
--8<---------------cut here---------------end--------------->8---

I suppose that "system terminfo directory" is set to
/gnu/store/...-ncurses-6.0 and IIUC correctly this is the only place
automatically searched.  What about adding TERMINFO_DIRS in
"$HOME/.guix-profile/etc/profile"?  I think TERMINFO_DIRS is more
appropriate than TERMINFO because it let the possibility for non-GuixSD
users to have multiple directories in it.

Here is an updated patch with my proposal: