unikernel/duniverse/dune_/test/blackbox-tests/test-cases/pkg/additional-constraints.t

@@ -0,0 +1,75 @@
+It's possible to include additional packages or constraints in workspace files:
+
+  $ . ./helpers.sh
+
+  $ cat >dune-workspace <<EOF
+  > (lang dune 3.11)
+  > (lock_dir
+  >  (constraints doesnotexist foo (bar (= 1.0.0)))
+  >  (repositories mock))
+  > (repository
+  >  (name mock)
+  >  (url "file://$(pwd)/mock-opam-repository"))
+  > EOF
+
+  $ mkrepo
+
+  $ mkpkg foo 1.0.0
+  $ mkpkg bar 1.0.0
+  $ mkpkg bar 1.9.1
+
+Notice that the constraints field doesn't introduce additional packages. The
+"doesnotexist" package isn't being pulled.
+
+  $ solve_project <<EOF
+  > (lang dune 3.11)
+  > (package
+  >  (name x)
+  >  (depends foo bar))
+  > EOF
+  Solution for dune.lock:
+  - bar.1.0.0
+  - foo.1.0.0
+
+Constraint negation is supported since 3.18:
+
+  $ cat >dune-workspace <<EOF
+  > (lang dune 3.18)
+  > (lock_dir
+  >  (constraints doesnotexist (foo (not (= 1.0.0))) (bar (not (= 1.0.0))))
+  >  (repositories mock))
+  > (repository
+  >  (name mock)
+  >  (url "file://$(pwd)/mock-opam-repository"))
+  > EOF
+
+There are no valid version of foo at the moment:
+
+  $ solve_project <<EOF
+  > (lang dune 3.18)
+  > (package
+  >  (name x)
+  >  (depends foo bar))
+  > EOF
+  Error: Unable to solve dependencies for the following lock directories:
+  Lock directory dune.lock:
+  Couldn't solve the package dependency formula.
+  Selected candidates: bar.1.9.1 x.dev
+  - foo -> (problem)
+      No usable implementations:
+        foo.1.0.0: Package does not satisfy constraints of local package x
+  [1]
+
+If we add one:
+
+  $ mkpkg foo 0.9.0
+
+  $ solve_project <<EOF
+  > (lang dune 3.18)
+  > (package
+  >  (name x)
+  >  (depends foo bar))
+  > EOF
+  Solution for dune.lock:
+  - bar.1.9.1
+  - foo.0.9.0