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-*- mode: org; coding: utf-8; -*-

#+TITLE: Hacking GNU Guix and Its Incredible Distro

Copyright © 2012, 2013, 2014, 2016, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
Copyright © 2015, 2017 Mathieu Lirzin <mthl@gnu.org>
Copyright © 2017 Leo Famulari <leo@famulari.name>
Copyright © 2017 Arun Isaac <arunisaac@systemreboot.net>

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

* Contributing

See the manual for useful hacking information, either by running

  info -f doc/guix.info "Contributing"

or by checking the [[https://guix.gnu.org/manual/devel/en/html_node/Contributing.html][web copy of the manual]].
generated by cgit
-to-build): In the 'derivation-path?' case, don't fail when 'read-derivation-from-file' raises to ENOENT; return the empty list in that case. (guix-build): Add non-existent '.drv' files to ITEMS. Pass ITEMS in addition to DRV to 'build-derivations'. * tests/guix-build.sh: Add test. Ludovic Courtès 2019-11-17tests: Test "guix build /gnu/store/….drv"....* tests/guix-build.sh: Add test for passing "guix build" a .drv. Ludovic Courtès 2019-11-07gnu: commencement: Ensure 'gnu-make-final' refers to the native 'pkg-config'....Fixes <https://bugs.gnu.org/38093>. When running: guix build --target=arm-linux-gnueabihf -e '(@ (gnu packages base) coreutils)' the '%current-target-system' parameter is set by the time the top-level of (gnu packages commencement) is evaluated. Consequently, we need to ensure that the 'pkg-config' macro evaluates in a context where '%current-target-system' is unset. * gnu/packages/commencement.scm (gnu-make-final): Refer to '%pkg-config' instead of 'pkg-config'. * tests/guix-build.sh: Add test. Ludovic Courtès 2019-07-20ui: 'warn-about-load-error' provides hints for unbound variables....* guix/ui.scm (warn-about-load-error): Add 'unbound-variable' clause. * tests/guix-build.sh: Add test. Ludovic Courtès 2019-07-20ui: 'warn-about-load-error' warns about file/module name mismatches....* guix/discovery.scm (scheme-modules): Rename the inner 'file' to 'relative'. Pass FILE as an addition argument to WARN. * guix/ui.scm (warn-about-load-error): Add 'module' argument (actually, what was called 'file' really contained a module name.) Call 'check-module-matches-file' in the catch-all error case. (check-module-matches-file): New procedure. * tests/guix-build.sh: Test it. Ludovic Courtès 2019-04-19guix build: Accept multiple '-s' options....* guix/scripts/build.scm (%default-options): Remove 'system'. (%options) <--system>: Keep previous occurrences of 'system in RESULT. (options->derivations)[system]: Remove. [systems, things-to-build]: New variables. [compute-derivation]: New procedure. Iterate on all of SYSTEMS to compute the derivations of THINGS-TO-BUILD. * tests/guix-build.sh: Add test for one and multiple '-s' flags. * doc/guix.texi (Additional Build Options): Document this behavior. Ludovic Courtès 2019-04-15guix build: Fix relative file name canonicalization for '--root'....Fixes <https://bugs.gnu.org/35271>. Reported by rendaw <7e9wc56emjakcm@s.rendaw.me>. * guix/scripts/build.scm (register-root): When ROOT is a relative file name, append the basename of ROOT, not ROOT itself. * tests/guix-build.sh: Add test. Ludovic Courtès 2019-02-04daemon: Rename 'NIX_STATE_DIR' and 'NIX_DB_DIR' environment variables....Fixes <https://bugs.gnu.org/22459>. Reported by Jeff Mickey <j@codemac.net>. * guix/config.scm.in (%state-directory): Change NIX_STATE_DIR to GUIX_STATE_DIRECTORY. (%store-database-directory): Change NIX_DB_DIR to GUIX_DATABASE_DIRECTORY. * nix/libstore/globals.cc (Settings::processEnvironment): Likewise. * guix/self.scm (make-config.scm): Likewise. * build-aux/build-self.scm (make-config.scm): Likewise. * build-aux/test-env.in: Likewise. * tests/derivations.scm ("derivation #:leaked-env-vars"): Likewise. * tests/guix-build.sh (GUIX_DAEMON_SOCKET): Likewise. * tests/guix-daemon.sh (socket): Likewise. Ludovic Courtès 2018-10-09guix build: '-f' accepts file-like objects....* guix/scripts/build.scm (options->things-to-build)[validate-type]: Check for 'file-like?'. (options->derivations): Accept 'file-like?'. * tests/guix-build.sh: Add a test with 'computed-file'. * doc/guix.texi (Additional Build Options): Mention file-like objects. Ludovic Courtès 2018-05-04guix build: Nicely report unbound variables with hints....* guix/ui.scm (print-unbound-variable-error): Add "error:" to the message. (report-unbound-variable-error): New procedure, with code formerly in 'report-load-error'. (report-load-error): Use it. (call-with-unbound-variable-handling): New procedure. (with-unbound-variable-handling): New macro. * guix/scripts/build.scm (options->derivations): Wrap body in 'with-unbound-variable-handling'. * tests/guix-build.sh (GUIX_PACKAGE_PATH): Add test. Ludovic Courtès 2018-03-13gnu: time: Update to 1.9....* gnu/packages/time.scm (time): Update to 1.9. * tests/guix-build.sh: Update time package to 1.9. Efraim Flashner 2017-11-11tests: Refer to "time@1.8"....This is a followup to dd00e0919fcecd895ff4e5a646cf068f46ff8d12. * tests/guix-build.sh: Refer to "time@1.8". Ludovic Courtès 2017-05-01packages: Remove support for PACKAGE-VERSION deprecated syntax....This syntax had been deprecated since 2016-02-28. * gnu/packages.scm (%find-package): Remove #:fallback? parameter and handling. * tests/guix-build.sh: Remove test for "time-1.7" syntax. * doc/guix.texi (Invoking guix lint): Update 'guix lint' output in example. Ludovic Courtès 2017-04-21store: 'GUIX_DAEMON_SOCKET' can now be a URI....* guix/store.scm (%daemon-socket-file): Rename to... (%daemon-socket-uri): ... this. (connect-to-daemon): New procedure. (open-connection): Rename 'file' to 'uri'. Use 'connect-to-daemon' instead of 'open-unix-domain-socket'. * guix/tests.scm (open-connection-for-tests): Rename 'file' to 'uri'. * tests/guix-build.sh: Add tests. * tests/store.scm ("open-connection with file:// URI"): New tests. Ludovic Courtès 2017-03-19gnu: Rename "guile-next" to "guile"....* gnu/packages/guile.scm (guile-next): Rename to... (guile-2.2): ... this. Update users. [name]: Change to "guile". [synopsis]: Remove. [properties]: Remove 'upstream-name', 'ftp-server', and 'ftp-directory'. * gnu/packages/bioinformatics.scm (rcas-web): Update accordingly. * gnu/packages/tls.scm (gnutls/guile-2.2): Likewise. * tests/guix-build.sh: Use 'guile@2.2' instead of 'guile-next'. * doc/guix.texi (Package Transformation Options): Update examples that referred to "guile-next". Ludovic Courtès 2016-10-03tests: Adjust 'guix build -S' test for source-less packages....This is a followup to 8a54c0ec694ad6e22b155d167552b8fd0914e82d. * tests/guix-build.sh: Allow 'guix build -S' to succeed with source-less packages. Check that the result is the empty string. Ludovic Courtès 2016-09-06packages: Add 'package-superseded' and associated support....This provides a way to mark a package as superseded by another one. Upgrades replace superseded packages with their replacement. * guix/packages.scm (package-superseded, deprecated-package): New procedures. * gnu/packages.scm (%find-package): Check for 'package-superseded'. * guix/scripts/package.scm (transaction-upgrade-entry)[supersede]: New procedure. Call it when 'package-superseded' is true. * tests/guix-build.sh: Add test for a superseded package. * tests/packages.scm ("package-superseded") ("transaction-upgrade-entry, superseded package"): New tests. Ludovic Courtès 2016-03-08packages: Support the deprecated "NAME-VERSION" syntax....Fixes a typo introduced in 1b846da8c372bee78851439fd9e72b2499115e5a that would lead to a backtrace when using the deprecated syntax. * gnu/packages.scm (%find-package): Turn the first argument to 'call-with-values' into a thunk. Use #:select instead of '@' to select the right 'package-name->name+version' procedure. Ludovic Courtès 2016-03-03guix build: -S returns the replacement's source....Reported by Mark H Weaver. * guix/scripts/build.scm (options->derivations): When SRC and GRAFT? are true, use the source of P's replacement. * tests/guix-build.sh: Add test. Ludovic Courtès 2016-03-02utils: Use '@' for separating package names and version numbers....This provides the ability to use numbers in package names. Fixes <http://bugs.gnu.org/19219>. * guix/utils.scm (package-name->name+version): New procedure. * gnu/packages.scm (%find-package): Add a FALLBACK? keyword argument. Use the previous method when no package is found. (specification->package+output, specification->package): Adapt documentation to new syntax. * doc/guix.texi (Invoking guix package, Invoking guix import): Likewise. * guix/ui.scm (package-specification->name+version+output): Likewise. * guix/scripts/import/hackage.scm (show-help): Likewise. * tests/guix-build.sh: Adapt to new syntax. * tests/guix-lint.sh: Likewise. * tests/guix-package.sh: Likewise. * tests/ui.scm ("package-specification->name+version+output"): Likewise. * tests/utils.scm ("package-name->name+version"): Likewise. * NEWS: Mention new syntax. Mathieu Lirzin 2016-03-02tests: Disable grafts by default....Fixes <http://bugs.gnu.org/22872>. Reported by myglc2 <myglc2@gmail.com>. * test-env.in: Define and export 'GUIX_BUILD_OPTIONS'. * tests/guix-build.sh: When setting 'GUIX_BUILD_OPTIONS', make sure it contains '--no-grafts'. * tests/guix-package.sh: Likewise. * tests/guix-daemon.sh: Add (%graft? #f) in Scheme snippets. Ludovic Courtès