diff options
Diffstat (limited to 'lib/spack/spack/spec.py')
| -rw-r--r-- | lib/spack/spack/spec.py | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/spack/spack/spec.py b/lib/spack/spack/spec.py index 85a638b602..8300e4d8a7 100644 --- a/lib/spack/spack/spec.py +++ b/lib/spack/spack/spec.py @@ -1604,13 +1604,20 @@ class Spec: try: dspec = next(dspec for dspec in orig if depflag == dspec.depflag) except StopIteration: - raise DuplicateDependencyError("Cannot depend on '%s' twice" % spec) + current_deps = ", ".join( + dt.flag_to_chars(x.depflag) + " " + x.spec.short_spec for x in orig + ) + raise DuplicateDependencyError( + f"{self.short_spec} cannot depend on '{spec.short_spec}' multiple times.\n" + f"\tRequired: {dt.flag_to_chars(depflag)}\n" + f"\tDependency: {current_deps}" + ) try: dspec.spec.constrain(spec) except spack.error.UnsatisfiableSpecError: raise DuplicateDependencyError( - "Cannot depend on incompatible specs '%s' and '%s'" % (dspec.spec, spec) + f"Cannot depend on incompatible specs '{dspec.spec}' and '{spec}'" ) def add_dependency_edge( |