build-sys: Add toplevel workspace Cargo.toml

rust-analyzer is happier with this because it understands
the project structure out of the box.

We aren't actually again adding a dependency on Rust/cargo in the core,
this is only used to make `cargo build` work out of the box to build
the Rust test code.

Cargo.toml

@@ -0,0 +1,6 @@
+# Today, this repository only uses Rust for tests.  This
+# toplevel Cargo.toml helps tools like rust-analyzer understand
+# that this project contains Rust code.  We don't otherwise currently
+# use `cargo` for any part of the core build.
+[workspace]
+members = ["tests/inst"]

Makefile.am

@@ -46,6 +46,9 @@ GITIGNOREFILES = aclocal.m4 build-aux/ buildutil/*.m4 config.h.in gtk-doc.make
 # Generated by coreos-assembler build-fast and kola
 GITIGNOREFILES += fastbuild-*.qcow2 _kola_temp/
 
+# Rust stuff
+GITIGNOREFILES += target/ Cargo.lock
+
 SUBDIRS += .
 
 if ENABLE_GTK_DOC

tests/inst/.gitignore

@@ -1,2 +0,0 @@
-target/
-Cargo.lock

tests/kolainst/Makefile

@@ -12,6 +12,6 @@ all:
 install:
 	install -D -m 0644 -t $(KOLA_TESTDIR) $(LIBSCRIPTS)
 	for x in $(TESTDIRS); do rsync -rlv ./$${x} $(KOLA_TESTDIR)/; done
-	install -D -m 0755 -t $(KOLA_TESTDIR)/nondestructive-rs ../inst/target/release/ostree-test
+	install -D -m 0755 -t $(KOLA_TESTDIR)/nondestructive-rs ../../target/release/ostree-test
 	install -D -m 0644 destructive-stamp.ign $(KOLA_TESTDIR)/destructive-rs/config.ign
 	./install-wrappers.sh destructive-list.txt $(KOLA_TESTDIR)/destructive-rs