./xbps-src -E show-build-deps complains about unseting readonly XBPS_BINPKG_EXISTS

[Johnnynator]

System

• xuname:
  output of xuname (part of xtools)
• package:
  affected package(s) including the version

Expected behavior

No output to stderr

Actual behavior

Log

./xbps-src -E show-build-deps kwin
=> Using `/media/SourceCode/void-packages/hostdir/binpkgs/plasma' as local repository.
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
/media/SourceCode/void-packages/common/xbps-src/shutils/build_dependencies.sh: line 169: unset: XBPS_BINPKG_EXISTS: cannot unset: readonly variable
breeze
....

Steps to reproduce the behavior