| Subject: | sign adds SIGNATURE to MANIFEST even if it already exists |
Since Test::CheckManifest 1.31 includes code to check for duplicate entries in MANIFEST https://github.com/reneeb/Test-CheckManifest/pull/5 I found out Module::Build adds SIGNATURE to MANIFEST in sub _sign_dir. To prevent errors from Test::CheckManifest Module::Build should check if SIGNATURE is already in MANIFEST before adding it.