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Author SHA1 Message Date
Eelco Dolstra 13176d74cc * Updated Fix descriptors to reflect the new Fix abstract syntax. 2003-05-25 22:43:33 +00:00
Eelco Dolstra 0ef4b6d0f8 * Cleaned up the semantics of Fix expressions. 
* Conditionals and variables in Fix expressions.  This allows, e.g.,

    Descr(
    [ Bind("pkgId", "subversion-0.21.0")

    , Bind("httpsClient", Bool(True))
    , Bind("httpServer", Bool(True))

    , Bind("ssl", If(Var("httpsClient"), Fix("./openssl-0.9.7b.fix"), ""))

    , Bind("httpd", If(Var("httpServer"), Fix("./httpd-2.0.45.fix"), ""))
    ...
    ])

  which introduces domain feature variables httpsClient and httpServer
  (i.e., whether Subversion is built with https client and webdav
  server support); the values of the variables influences package
  dependencies and the build scripts.

  The next step is to allow that packages can express constraints on
  each other.  E.g., StrategoXT is dependent on an ATerm library with
  the "gcc" variant enabled.  In fact, this may cause several
  Nix instantiations to be created from a single Fix descriptor.  If
  possible, Fix should try to find the least set of instantiations
  that obeys the constraints.
 2003-04-25 15:33:50 +00:00
Eelco Dolstra 49e0d743d7 * Fix descriptors for Pan and its dependencies. 2003-04-23 21:21:06 +00:00
Eelco Dolstra f546e0cda4 * Fix descriptor for Subversion 0.21.0. 2003-04-23 09:02:53 +00:00
Eelco Dolstra aa8fda4b54 * We no longer use nix-populate standalone, rather we use it as a 
build action for `system' packages (like system.fix) that have
  dependencies on all packages we want to activate.

  So the command sequence to switch to a new activation configuration
  of the system would be:

    $ fix -i .../fixdescriptors/system.fix
    ...
    system.fix -> 89cf4713b37cc66989304abeb9ea189f

    $ nix-switch 89cf4713b37cc66989304abeb9ea189f

* A nix-profile.sh script that can be included in .bashrc.
 2003-04-09 12:26:48 +00:00
Eelco Dolstra f56b7312b2 * Descriptor importing in Fix. 2003-04-08 15:36:54 +00:00
Eelco Dolstra 0d2b24cdd1 * `Fix' is a high-level descriptor instantiator for Nix. It replaces 
nix-instantiate.
 2003-04-08 12:00:51 +00:00