This is yet another attempt at a build tool, akin to make(1), in Scheme.

Conjure is used as a build tool for the spells[0] and sbank[1], where it’s task is mostly file generation by substition, similiar to what autoconf-generated “configure” scripts do.

It currently contains the following functionality to fulfill the above purpose:

This is currently using file modifiction times (no MD5 goodness yet)

Acts as a “build language”, embedded in Scheme. An example from spells:

(task cc (cc-conf))

(task (configure
       (produce '((("spells" "foreign") "config.sls")
                  <= (("libraries" "foreign") "config.sls.in")))
       (fetchers (cc-fetcher 'cc)
                 (hostinfo-fetcher))))

Allows tailoring files to a specific environment by doing substitions on template files. An example from spells:

(define c-type-alignof
  (let ((target '("#!@(host-info os)"
                  "#!@(host-info cpu)")))
     ...))

In this code fragment, the #!@(…) “forms” are substituted at build time with the hosts’ operating system and CPU.

The configuration module uses a cache, avoiding a potentially costly re-calculation of substitution value on each source file change.