gexp: Add 'let-system'.

* guix/gexp.scm (<system-binding>): New record type.
(let-system): New macro.
(system-binding-compiler): New procedure.
(default-expander): Add 'self-quoting?' case.
(self-quoting?): New procedure.
(lower-inputs): Add 'filterm'.  Pass the result of
'mapm/accumulate-builds' through FILTERM.
(gexp->sexp)[self-quoting?]: Remove.
* tests/gexp.scm ("let-system", "let-system, target")
("let-system, ungexp-native, target")
("let-system, nested"): New tests.
* doc/guix.texi (G-Expressions): Document it.
This commit is contained in:
Ludovic Courtès 2017-11-14 10:16:22 +01:00
parent d03001a31a
commit 644cb40cd8
No known key found for this signature in database
GPG key ID: 090B11993D9AEBB5
4 changed files with 165 additions and 26 deletions

View file

@ -85,6 +85,7 @@
(eval . (put 'with-imported-modules 'scheme-indent-function 1))
(eval . (put 'with-extensions 'scheme-indent-function 1))
(eval . (put 'with-parameters 'scheme-indent-function 1))
(eval . (put 'let-system 'scheme-indent-function 1))
(eval . (put 'with-database 'scheme-indent-function 2))
(eval . (put 'call-with-transaction 'scheme-indent-function 2))