Add RISC-V support to jhack

[taurus-forever]

Hi,

There are PoC for Juju on RISC-V but it is hard to test/troubleshoot it without jhack.
Can you please add RISC-V to the list of supported architectures for jhack?

Tnx!

[PietroPasotti]

uhm what would that entail? just add it to the snap architectures for building, or are there other consequences?
I have no means to test on risc-v.
Have you verified that jhack works from sources on that arch?

[taurus-forever]

Missed this thread. TL;DR: I would say, yes, simply add new architecture, works from sources:

taurus@riscv64:$ uname -a
Linux riscv64 6.6.20-6-fml13v01 #0ubuntu1 SMP Wed Apr 23 21:44:30 UTC 2025 riscv64 riscv64 riscv64 GNU/Linux

taurus@riscv64:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 24.04.3 LTS
Release:	24.04
Codename:	noble

taurus@riscv64:~$ git clone https://github.com/canonical/jhack
taurus@riscv64:~$ cd jhack/
taurus@riscv64:~/jhack$ pip install -e . --break-system-packages
taurus@riscv64:~/jhack$ jhack version
jhack 0.4.4.0.24

There is some noise, e.g. the first version call has:

taurus@riscv64:~/jhack$ jhack version
/home/taurus/jhack/jhack/utils/integrate.py:399: SyntaxWarning: invalid escape sequence '\['
  print(f"{ep1} {sym}-\[{interface}]-{sym} {ep2}")
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:18: SyntaxWarning: invalid escape sequence '\S'
  _optional_prefix = "(\S+)?( )?"
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:22: SyntaxWarning: invalid escape sequence '\S'
  base_pattern + "(?P<endpoint>\S+):(?P<endpoint_id>\S+): " + _optional_prefix
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:25: SyntaxWarning: invalid escape sequence '\S'
  operator_event_suffix = "Charm called itself via hooks/(?P<event>\S+)\."
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:28: SyntaxWarning: invalid escape sequence '\S'
  event_suffix = "Emitting Juju event (?P<event>\S+)\."
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:33: SyntaxWarning: invalid escape sequence '\S'
  jhack_fire_evt_suffix = "The previous (?P<event>\S+) was fired by jhack\."
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:36: SyntaxWarning: invalid escape sequence '\S'
  "(?P<event>\S+) \((?P<jhack_replayed_evt_timestamp>\S+(\s*\S+)?)\) was replayed by jhack\."
/home/taurus/jhack/jhack/utils/tail_charms/core/parser.py:65: SyntaxWarning: invalid escape sequence '\/'
  lobotomy_suffix = "(?:selective|full) lobotomy ACTIVE: event hooks\/(?P<event>\S+) ignored."
/home/taurus/jhack/jhack/utils/sync.py:151: SyntaxWarning: invalid escape sequence '\.'
  include_files: str = ".*\.py$",
/home/taurus/jhack/jhack/utils/nuke.py:39: SyntaxWarning: invalid escape sequence '\_'
  NUKE_ASCII_ART = """
/home/taurus/jhack/jhack/utils/nuke.py:54: SyntaxWarning: invalid escape sequence '\`'
  NUKE_GENTLY_ASCII_ART = """
/home/taurus/jhack/jhack/utils/tail_logs.py:203: SyntaxWarning: invalid escape sequence '\['
  focus_spec = "\[{}]".format("|".join(self.focus))
jhack 0.4.4.0.24
taurus@riscv64:~/jhack$

but it works well on the second+ retries... could be addressed later.

Also:

Sure, I can test riscv snap, in theory it is as simple as:

taurus@riscv64:~/jhack$ git diff
diff --git a/snapcraft.yaml b/snapcraft.yaml
index 127fcee..85367de 100644
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@@ -8,6 +8,7 @@ platforms:
   arm64:
   ppc64el:
   s390x:
+  riscv64:
 
 adopt-info: jhack
 summary: Cli tool packed with juju hacks.

Tnx!