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2014-07-25build: Better reject systems where the shebang would be too long.Ludovic Courtès
* tests/gexp.scm (shebang): Add "#!".
2014-07-17gexp: Gracefully handle printing of gexps with spliced references.Ludovic Courtès
* guix/gexp.scm (write-gexp): Wrap 'write' call in 'false-if-exception'. * tests/gexp.scm ("printer", "printer vs. ungexp-splicing"): New tests.
2014-07-12gexp: Resolve the default system at '>>=' time.Ludovic Courtès
Partly fixes <http://bugs.gnu.org/18002>. Reported by David Thompson <dthompson2@worcester.edu>. * guix/gexp.scm (gexp->derivation): Change #:system to default #f. Use (%current-system) from within the 'mlet*'. * tests/gexp.scm ("gexp->derivation, default system"): New test.
2014-06-04tests: Skip tests that would hit the shebang length limitation.Ludovic Courtès
* tests/gexp.scm (shebang): New variable. Skip "gexp->script" when SHEBANG is longer than 127 chars. * guix/gexp.scm (gexp->script): Add comment on the issue.
2014-05-01gexp: Add support for 'origin?' objects in 'ungexp' forms.Ludovic Courtès
* guix/gexp.scm (lower-inputs, gexp-inputs, gexp->sexp, canonicalize-reference): Add 'origin?' case. * guix/monads.scm (origin->derivation): New procedure. * tests/gexp.scm ("one input origin"): New test.
2014-04-28Add (guix gexp).Ludovic Courtès
* guix/gexp.scm: New file. * tests/gexp.scm: New file. * Makefile.am (MODULES): Add guix/gexp.scm. (SCM_TESTS): Add tests/gexp.scm. * doc/guix.texi (Derivations): Add #:inputs in 'derivation' example. Mark 'build-expression->derivation' as deprecated, refer to "G-Expressions". Remove paragraph about code strata. (G-Expressions): New node.