[bug#55220] [PATCH 0/4] Add --list-systems and --list-targets options.

[Mathieu Othacehe <othacehe@gnu.org>]

Hello,

Most build commands support --system and --target options. Those options
suffer from multiple issues: they are never listed and never checked.

For --system, this is a real issue as aside from reading the (gnu packages
bootstrap) module content the user cannot know what are the supported
arguments. Providing a wrong system also fails badly:

mathieu@meije ~$ guix build hello --system=arm-linux
Backtrace:
In guix/memoization.scm:
    101:0 19 (_ #<hash-table 7f1d5d82a340 0/31> #<package tar@1.34 …> …)

...
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
dynamic linker name not known for this system "arm-linux"

For --target, any GNU supported triplet can possibly work but providing a
wrong triplet will also fail badly:

mathieu@meije ~$ guix build hello --target=arm-linux
Backtrace:
In guix/store.scm:
   1385:9 19 (map/accumulate-builds #<store-connection 256.99 7f5bd…> …)
 

...
ice-9/boot-9.scm:1685:16: In procedure raise-exception:
dynamic linker name not known for this system "arm-linux"

This patchset adds two new options: --list-systems and --list-targets that
list the supported systems and targets. The arguments passed to --system and
--target options are also checked:

mathieu@meije ~/guix [env]$ ./pre-inst-env guix build hello --system=arm-linux
guix build: error: 'arm-linux' is not a supported system.

mathieu@meije ~/guix [env]$ ./pre-inst-env guix build hello --target=arm-linux
guix build: error: 'arm-linux' is not a supported target.

Thanks,

Mathieu

Mathieu Othacehe (4):
  platform: Introduce new platforms.
  platform: Add discovery support.
  ci: Do not rely on hardcoded cross-targets lists.
  scripts: Add --list-systems and --list-targets options.

 doc/guix.texi                |  8 ++++
 etc/release-manifest.scm     |  4 +-
 gnu/ci.scm                   | 15 +------
 gnu/local.mk                 |  4 ++
 gnu/platform.scm             | 62 ++++++++++++++++++++++++--
 gnu/platforms/intel.scm      | 48 +++++++++++++++++++++
 gnu/platforms/mips.scm       | 29 +++++++++++++
 gnu/platforms/powerpc.scm    | 36 ++++++++++++++++
 gnu/platforms/riscv.scm      | 29 +++++++++++++
 guix/scripts/archive.scm     | 20 +++------
 guix/scripts/build.scm       | 84 ++++++++++++++++++++++++++++++------
 guix/scripts/environment.scm | 11 ++---
 guix/scripts/graph.scm       | 15 +++----
 guix/scripts/pack.scm        | 20 +++------
 guix/scripts/pull.scm        | 12 +++---
 guix/scripts/size.scm        | 13 +++---
 guix/scripts/weather.scm     | 11 +++--
 17 files changed, 329 insertions(+), 92 deletions(-)
 create mode 100644 gnu/platforms/intel.scm
 create mode 100644 gnu/platforms/mips.scm
 create mode 100644 gnu/platforms/powerpc.scm
 create mode 100644 gnu/platforms/riscv.scm

-- 
2.35.1