buildsys: add a 'make list-packages' target

To ease development on new machines, this provides an easy way to just
do

    # apt install $(make list-packages)

to get started.

Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>

Makefile

@@ -38,6 +38,12 @@ dinstall:
 	autopkgtest build/$* build/*.deb -- null
 	touch $@
 
+.PHONY: list-packages
+list-packages:
+	@for p in $(CRATES); do \
+		echo "librust-$$p-dev"; \
+	done
+
 .PHONY: check
 check:
 	cargo test

README.rst

@@ -11,13 +11,23 @@ checksums are not compatible.
 To reference new dependencies (or updated versions) that are not yet packaged,
 the dependency needs to point directly to a path or git source.
 
+Quickly installing all packages from apt
+========================================
+
+To a void too many manual installations when ``mk-build-deps`` etc. fail, a
+quick way to install all the main packages of this workspace is to run:
+
+::
+
+    # apt install $(make list-packages)
+
 Steps for Releases
 ==================
 
 - Run ./bump.sh <CRATE> [patch|minor|major|<VERSION>]
 -- Fill out changelog
 -- Confirm bump commit
-- Build packages with `make deb`.
+- Build packages with `make <crate>-deb`.
 -- Don't forget to commit updated d/control!
 
 Adding Crates