unikernel/duniverse/dune_/test/blackbox-tests/test-cases/alias-candidates.t

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+Dune should suggest similar aliases when it cannot find one. 
+
+  $ cat > dune-project << EOF
+  > (lang dune 3.7)
+  > EOF
+  $ cat > dune << EOF
+  > (rule
+  >  (alias foo)
+  >  (action
+  >   (echo "Hello, world from \"foo\"!")))
+  > EOF
+
+We have an alias "foo" but let's try to build something misspeled:
+  $ dune build @fou
+  Error: Alias "fou" specified on the command line is empty.
+  It is not defined in . or any of its descendants.
+  Hint: did you mean fmt or foo?
+  [1]