gnu: idr: Update to 2.0.3.

* gnu/packages/bioinformatics.scm (idr): Update to 2.0.3.
[source]: Add snippet to remove generated code.

gnu: idr: Correct license.

* gnu/packages/bioinformatics.scm (idr)[license]: Change to GPLv2+.

hydra: Add jobs for the modular Guix.

* build-aux/hydra/guix-modular.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.

hydra: 'evaluate' passes an alist to the entry point.

* build-aux/hydra/evaluate.scm (%top-srcdir): New variable.
<top level>: Pass it to 'hydra-jobs'.

Add (guix self) and use it when pulling.

This mitigates <https://bugs.gnu.org/27284>.

* guix/self.scm: New file.
* Makefile.am (MODULES): Add it.
* build-aux/build-self.scm (libgcrypt, zlib, gzip, bzip2, xz)
(false-if-wrong-guile, package-for-current-guile, guile-json)
(guile-ssh, guile-git, guile-bytestructures): Remove.
(build): Rewrite to simply delegate to 'compiled-guix'.
* gnu/packages.scm (%distro-root-directory): Rewrite to try different
directories.
* guix/discovery.scm (guix): Export 'scheme-files'.
* guix/scripts/pull.scm (build-and-install): Split into...
(install-latest): ... this.  New procedure.  And...
(build-and-install): ... this, which now takes a monadic value argument.
(indirect-root-added): Remove.
(guix-pull): Call 'add-indirect-root'.  Call 'build-from-source' and
pass the result to 'build-and-install'.

git: Do not add '.git' to the store.

This makes 'latest-repository-commit' significantly more efficient and
reduces disk usage in the store.

* guix/git.scm (copy-to-store)[dot-git?]: New procedure.
Pass it as the #:select? argument to 'add-to-store'.

pull: Trim import list.

* guix/scripts/pull.scm: Remove useless imports.

gexp: 'directory-union' has a #:quiet? parameter.

* guix/gexp.scm (directory-union): Add #:quiet? and honor it.

union: Parametrize the symlink procedure .

* guix/gexp.scm (directory-union): Add #:hard-links and honor it.
* guix/build/union.scm (union-build): Add #:symlink parameter.

gnu: guix: Update snapshot.

* gnu/packages/package-management.scm (guix): Update to 953c2de.

tests: Disable test for freed disk space that fails on Btrfs.

This is a follow-up to commit 40e89f5be609045bc2666cc16a4ef80bb7f84095.

* tests/store.scm ("dead path can be explicitly collected"): Don't check
that (> freed 0).
* gnu/packages/package-management.scm (guix)[arguments]<#:phases>: Remove
workaround for the same problem.

gnu: taglib: Update to 1.11.1 and fix home page.

* gnu/packages/mp3.scm (taglib)[version]: Update to 1.11.1.
[arguments]: Configure with -DBUILD_SHARED_LIBS=ON.
[home-page]: Change to http://taglib.org.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: retroarch: Update to 1.6.9.

* gnu/packages/games.scm (retroarch): Update to 1.6.9.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: gnupg: Update to 2.2.3.

* gnu/packages/gnupg.scm (gnupg): Update to 2.2.3.

gnu: orc: Update to 0.4.28.

* gnu/packages/gstreamer.scm (orc): Update to 0.4.28.

gnu: samba: Update to 4.7.3 [fixes CVE-2017-14746 and CVE-2017-15275].

* gnu/packages/samba.scm (samba): Update to 4.7.3.

gnu: signify: Update to 23.

* gnu/packages/crypto.scm (signify): Update to 23.

gnu: guix: Disable test that fails on Btrfs.

Works around <https://bugs.gnu.org/29363>.
Reported by Rutger Helling <rhelling@mykolab.com>.

* gnu/packages/package-management.scm (guix)[arguments]: Rename
'disable-container-tests' phase to 'disable-failing-tests' and add
substitution to disable test for freed disk space.

gnu: retroarch: Update to 1.6.8.

* gnu/packages/games.scm (retroarch): Update to 1.6.8.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: cdogs-sdl: Update to 0.6.6.

* gnu/packages/games.scm (cdogs-sdl): Update to 0.6.6.

Signed-off-by: Leo Famulari <leo@famulari.name>