~ $ sudo port -vu install sbcl
--->  Computing dependencies for sbcl.
--->  Fetching sbcl
--->  Verifying checksum(s) for sbcl
--->  Checksumming sbcl-1.0.29-source-r2.tar.bz2
--->  Extracting sbcl
--->  Extracting sbcl-1.0.29-source-r2.tar.bz2
--->  Applying patches to sbcl
--->  Applying /opt/local/var/macports/sources/rsync.macports.org/release/ports/lang/sbcl/files/patch-use-mach-exception-handler.diff
patching file customize-target-features.lisp
--->  Configuring sbcl
--->  Building sbcl
Error: Target org.macports.build returned: can't read "host_lisp": no such variable
Warning: the following items did not execute (for sbcl): org.macports.activate org.macports.build org.macports.destroot org.macports.install
Error: Status 1 encountered during processing.