gnu: automake: Adjust test suite to lack of /bin/sh.
* gnu/packages/autotools.scm (autoconf-wrapper): New variable.
(automake): Use AUTOCONF-WRAPPER instead of AUTOCONF.
Add `automake-skip-amhello-tests.patch' as an input.
Add #:patches and #:phases arguments.
* gnu/packages/patches/automake-skip-amhello-tests.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.
packages: Remove redundant test for inputs-as-procedures.
* guix/packages.scm (package-derivation)[expand-input]: Remove redundant
test when the input is a procedure.
doc: Add "The Perfect Setup" in 'HACKING'.
* HACKING (The Perfect Setup): New section.
gnu: Add Geiser.
* gnu/packages/emacs.scm (geiser): New variable.
gnu: gnutls: Remove unneeded import.
* gnu/packages/gnutls.scm: Remove import of (gnu packages base).
gnu: Add groff.
* gnu/packages/groff.scm: New file.
* Makefile.am (MODULES): Add it.
gnu: Add psutils.
* gnu/packages/ghostscript.scm (psutils): New variable.
gnu: Add netpbm.
* gnu/packages/netpbm.scm: New file.
* Makefile.am (MODULES): Add it.
gnu: Add missing libevent patch.
* gnu/packages/patches/libevent-dns-tests.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.
Update 'HACKING'.
* HACKING (When the platform is supported by Nixpkgs): Update the example.
gnu: Add Tor.
* gnu/packages/tor.scm: New file.
* Makefile.am (MODULES): Add it.
Update `NEWS'.
* NEWS: Update.
gnu: Add libevent.
* gnu/packages/libevent.scm: New file.
* Makefile.am (MODULES): Add it.
download: Add HTTPS support.
* guix/build/download.scm: Autoload (gnutls).
(tls-wrap): New procedure.
(open-connection-for-uri): Add support for `https'. Wrap the socket
with `tls-wrap' in that case.
(url-fetch): Add `https'.
* guix/download.scm (gnutls-derivation): New procedure.
(url-fetch)[need-gnutls?]: New variable.
Call `gnutls-derivation' when NEED-GNUTLS? is true, and add its output
to the `GUILE_LOAD_PATH' env. var. in that case.
packages: Have `package-derivation' return a <derivation> as a second value.
* guix/packages.scm (cache): Change the `drv' argument to `thunk'.
Memoize all the return values of THUNK.
(cached-derivation): Remove.
(cached): New macro.
(package-derivation): Use `cached' instead of `(or (cached-derivation) …)'.
* doc/guix.texi (Defining Packages): Update accordingly.
gnu: mit-krb5: Patch and enable tests.
* gnu/packages/mit-krb5.scm (mit-krb5): Enable patched tests.
doc: Run `useradd -g guix-builder -G guix-builder'.
* doc/guix.texi (Setting Up the Daemon): Add `-G guix-builder' when
invoking `useradd'.
Suggested by Aleix Conchillo Flaqué <aconchillo@gmail.com>.
gnu: screen: correct license to gpl2+
* gnu/packages/screen.scm (screen): correct license field