$(prefix) uppercased for convention: DESTDIR and PREFIX are the usual parameters of `make install`.
Mixed var-casing just looks clumsy in `make DESTDIR=/tmp/mypkgroot prefix=/usr install`.
Dropped scripts/find-first-site-package.py as junk code. It didn't work
altogether, always returning '/'. Because distutils.sysconfig.get_python_lib()
returns *one string*, not a list of strings; thus get_python_lib()[0] == '/'.
However, it isn't that trivial to detect the correct path to site-packages of
the last install. What we do, is take *all* possible site-packages locations
from site.getsitepackages([$PREFIX]), and remove {guake,guake-*.egg-info} from
there. This is robust, and can't do any harm besides wiping [possibly several]
guake packages under the specified PREFIX (which defaults to /usr/local) --
which is exactly what `make uninstall` is supposed to do anyway.
Targets uninstall-old-locale, uninstall-old-schemas dropped. I fail to see any
purpose and/or utility of them. With OLD_PREFIX:=$(DESTDIR)usr (which by itself
conflates considerations and simply is wrong), what those targets did can be
trivially emulated via `make DESTDIR=... PREFIX=/usr uninstall`; so there
remains no point in duplicating the uninstall path lists.
Target uninstall-schemas expanded to cover all installed artifacts.
Target uninstall-locale's idempotence fixed using the `|| :` error-silencer.
"Installing from source" warning corrected and made more prominent.
DEV_*_DIR vars dropped as unused, except DEV_DATA_DIR which is used.
Tested with:
make DESTDIR=/tmp/tt PREFIX=/usr/local install
make DESTDIR=/tmp/tt PREFIX=/usr/local uninstall
tree /tmp/tt
# 13 directories, 0 files
closes#1646 @ GitHub.
sem-ver: bugfix
