Previously, 'guix pull' would always build with Guile 2.0.
Now it builds with the Guile that matches (effective-version).
* build-aux/build-self.scm (false-if-wrong-guile)
(package-for-current-guile): New procedures.
(guile-json, guile-ssh): Use it.
(guile-for-build): New procedure.
(build): Use (effective-version) instead of the hard-coded "/2.0".
Add (guix modules) closure to #:modules argument. Pass
\#:guile-for-build argument to 'gexp->derivation'.
* guix/build/pull.scm (depends-on-guile-ssh?, all-scheme-files): New
procedures.
(build-guix): Show the output of (version). Use the above procedures.
Filter out files that match 'depends-on-guile-ssh?' when (ssh session)
is missing.
Fix regression introduced in 9e76eed.
* build-aux/build-self.scm (guile-ssh): New variable.
(build)[builder]: Add 'guile-ssh' to %load-path and %load-compiled-path.
Fixes <http://bugs.gnu.org/19278>.
Reported by Tomáš Čech <tcech@suse.cz>.
This allows 'guix --version' to return something that better represents
what version is being used.
* build-aux/build-self.scm (date-version-string): New procedure.
(build): Add #:version.
[builder]: Pass it to 'build-guix' as #:package-version.
Fixes <http://bugs.gnu.org/18534>.
* guix/scripts/pull.scm (with-environment-variable, with-PATH): New
macros.
(temporary-directory, first-directory, interned-then-deleted): New
procedures.
(unpack): Rewrite to do the unpacking in the current process rather
than as a separate derivation.
(%self-build-file): New variable.
(build-from-source): New procedure.
(build-and-install): Use it.
* guix/build/pull.scm (build-guix): Rename 'tarball' argument to
'source'. Remove #:tar and #:gzip parameters, as well as 'tar'
invocation. Remove 'scandir' invocation. Wrap body in
'with-directory-excursion'.
* build-aux/build-self.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
