#8 Can't install HSQL.PostgreSQL

[Anonymous]

I can build and install HSQL, and also configure HSQL.PostgreSQL, but when trying to build this package I obtain the attached warning, and can't install, runghc complaints:

Installing: /usr/local/lib/hsql-postgresql-1.7/ghc-6.6 & /usr/local/bin hsql-postgresql-1.7...
Registering hsql-postgresql-1.7...
Reading package info from ".installed-pkg-config" ... done.
ghc-pkg: /usr/include/postgresql/8.1/server doesn't exist or isn't a directory (use --force to override)

I have postgresql-8.1 installed, but that directory doesn't exist. Also, runghc doesn't knows about --force option.

[Nobody/Anonymous]

warning when building postgresql