* guix/build/utils.scm (substitute): Change to accept a `pattern+procs'
parameter. Iterate over it.
(substitute*): Adjust accordingly.
* distro/base.scm (guile-1.8): Adjust accordingly.
* guix-build.in (leave): New macro, formerly in `guix-build'.
(show-help): Document `--cores'.
(%options): Add `--cores'.
(guix-build): Remove `leave' macro from here. Pass the `cores' option
value to `set-build-options'.
* guix/build/utils.scm (let-matches, substitute*): New macros.
* distro/base.scm (guile-1.8): Use `substitute*' instead of
`substitute'. Remove the #:modules argument.
* guix/build/gnu-build-system.scm (set-paths): Dump the value of
environment variables in the `environment-variables' files, similar to
what Nixpkgs does.
* guix/build/gnu-build-system.scm (patch): New procedure.
(%standard-phases): Add `patch'.
* guix/build-system/gnu.scm (gnu-build): Add `patches' and `patch-flags'
parameters. Pass them on.
* guix/packages.scm (<package-source>): Rename to...
(<origin>): ... this. Update users.
* distro/base.scm (libsigsegv, gawk, hello): Adjust to renaming; refer
to VERSION to build the URL.
* guix/utils.scm (define-record-type*)[make-syntactic-constructor]: Bind
all the ((FIELD VALUE) ...) in a `letrec*'. Adjust `field-value'
accordingly.
* tests/utils.scm ("define-record-type* with letrec* behavior"): New
test.
* guix/packages.scm (package-derivation): When ARGS is a procedure, call
(ARGS SYSTEM).
* distro/base.scm (gawk)[arguments]: Turn into a procedure, to disable
tests on Cygwin.
* guix/derivations.scm (write-derivation)[coalesce-duplicate-inputs]:
New procedure.
Use it to process INPUTS.
* tests/derivations.scm ("user of multiple-output derivation"): New
test.
We were already relying on the new version in `set-build-options', so
this patch fixes that.
* guix/store.scm (%protocol-version): Increase.
(open-connection)[reserve-space?]: New argument. Pass it to the
server when it's recent enough.
* guix/derivations.scm (derivation-prerequisites,
derivation-prerequisites-to-build): New procedures.
* tests/derivations.scm ("build-expression->derivation and
derivation-prerequisites", "build-expression->derivation and
derivation-prerequisites-to-build"): New tests.
* guix/store.scm (valid-path?): New procedure.
* tests/builders.scm ("http-fetch", "gnu-build"): Use it.
* tests/derivations.scm ("add-to-store, flat", "add-to-store,
recursive", "derivation with no inputs", "build derivation with 1
source", "build derivation with coreutils",
"build-expression->derivation with expression returning #f"):
Likewise.
* guix/store.scm (set-build-options)[build-cores, use-substitutes?]: New
keyword parameters.
[send]: Change to expect a type, and use `write-arg'.
Send settings for BUILD-CORES and USE-SUBSTITUTES? when the server
supports it.
* guix/packages.scm (<package>)[arguments]: Default to '().
* distro/base.scm (libsigsegv, gawk): New packages.
(hello): Use GAWK instead of (nixpkgs-derivation "gawk").
* guix/packages.scm (<location>): New record type.
(location, source-properties->location): New procedures.
(<package>)[location]: New field.
* tests/packages.scm ("GNU Hello"): Test `package-location'.
