gnu: r-curl: Update to 0.9.7. * gnu/packages/web.scm (r-curl): Update to 0.9.7.
gnu: r-htmlwidgets: Update to 0.6. * gnu/packages/web.scm (r-htmlwidgets): Update to 0.6.
gnu: r-servr: Update to 0.4. * gnu/packages/web.scm (r-servr): Update to 0.4.
gnu: r-jsonlite: Update to 0.9.19. * gnu/packages/web.scm (r-jsonlite): Update to 0.9.19.
gnu: r-rcpp: Update to 0.12.4. * gnu/packages/statistics.scm (r-rcpp): Update to 0.12.4.
gnu: Add filevercmp. * gnu/packages/bioinformatics.scm (filevercmp): New variable.
gnu: pinentry: Update to 0.9.7. * gnu/packages/gnupg.scm (pinentry): Update to 0.9.7.
gnu: manaplus: Update to 1.6.4.23. * gnu/packages/games.scm (manaplus): Update to 1.6.4.23.
gnu: git-modes: Update to 1.2.2. * gnu/packages/emacs.scm (git-modes): Update to 1.2.2.
gnu: emacs-with-editor: Update to 2.5.1. * gnu/packages/emacs.scm (emacs-with-editor): Update to 2.5.1.
gnu: magit: Update to 2.6.1. * gnu/packages/emacs.scm (magit): Update to 2.6.1.
emacs: Add "edit" command to a list of licenses. * emacs/guix-ui-license.el (guix-license-list-edit): New command. (guix-license-list-mode-map): Bind it to "e" key.
emacs: Add license definition button to License Info buffer. * emacs/guix-ui-license.el (guix-license-insert-file): New procedure. (guix-license-info-format): Use it.
emacs: Add 'guix-find-license-definition' command. * emacs/guix-license.el (guix-license-file): New procedure. (guix-find-license-definition): New command. * doc/emacs.texi (Emacs Licenses): Document it.
gnu: Add xfce4-taskmanager. * gnu/packages/xfce.scm (xfce4-taskmanager): Add variable.
gnu: woff2: Fix build parallelism. * gnu/packages/patches/woff2-libbrotli.patch: Add dependency of executables on object files.
import: cpan: check version bounds on core modules. Modules may be removed from Perl's core, so we must check for a removal version. * guix/import/cpan.scm (cpan-module->sexp)[core-module?]: Also check version upper bound.
syscalls: 'terminal-columns' catches EINVAL on the TIOCGWINSZ ioctl. Reported by Mark H Weaver <mhw@netris.org>. * guix/build/syscalls.scm (terminal-columns): Tolerate EINVAL. * tests/syscalls.scm ("terminal-window-size ENOTTY"): Likewise.
guix gc: Add '--free-space'. * guix/scripts/gc.scm (show-help, %options): Add '--free-space'. (guix-gc)[ensure-free-space]: New procedure. Handle '--free-space'.
syscalls: Add 'statfs'. * guix/build/syscalls.scm (<file-system>): New record type. (fsword): New macro. (%statfs): New C struct. (statfs): New procedure.