* gnu/installer/newt/help.scm: New file.
* gnu/local.mk (INSTALLER_MODULES): Add it.
* po/guix/POTFILES.in: Add it.
* gnu/installer/record.scm (<installer>): Add 'help-menu' and 'help-page'
fields,
(installer-help-menu, installer-help-page): new exported procedures.
* gnu/installer/newt.scm (init): Set the help line,
(help-menu, help-page): new procedures used ...
(newt-installer): ... here.
* gnu/installer/newt/keymap.scm (run-layout-page): Add a context argument to
differenciate the help context from the main one,
(run-keymap-page): add a context argument and pass it to run-layout-page.
* gnu/installer.scm (compute-keymap-step): Add a context argument and pass it
to 'installer-keymap-page',
(installer-steps): set the help menu and pass the appropriate context to
compute-keymap-step calls,
(guile-newt): update to revision 2.
786c9c39bc