[y3owk1n]

Description

This PR makes the shell that exec steps run, and general.kb_layout_to_use, configurable per platform, using the same table shape general.primary_modifier introduced in #1854.

[general]
kb_layout_to_use = { darwin = "com.apple.keylayout.Dvorak", linux = "English (Dvorak)" }

[general.shell]
darwin = ["/bin/zsh", "-lc"]
linux = ["/bin/bash", "-lc"]
windows = ['C:\Windows\System32\cmd.exe', "/c"]

What changed for users.

• general.shell is new. It is the full command line (shell plus arguments) an exec step runs, with the step's command string appended last. Every entry must start with a path that is absolute on its own platform and have at least one argument. Neru checks all three entries on every machine.
• general.kb_layout_to_use takes the same per-platform table.
• All three per-platform options (shell, kb_layout_to_use, primary_modifier) accept a table keyed by darwin, linux and windows, or one value for all three. A table only changes the platforms it names. A misspelled platform key such as macos refuses the file with "macos" is not a platform. Use darwin, linux or windows.
• neru config set general.shell.linux '["/bin/zsh", "-c"]' and neru config set general.kb_layout_to_use.darwin <id> change one entry at runtime.

Existing configs keep working.

• A kb_layout_to_use = "..." line loads as one value for every platform, with no warning.
• exec_shell and exec_shell_args are deprecated and are removed in v2. Until then each one that is set replaces its part of general.shell on every platform, so a config written for one machine runs the same shell as before. Loading and neru config validate warn general.exec_shell is deprecated and is removed in v2. Move it to general.shell (same for exec_shell_args). neru config set does not print it, as with every config warning today.
• The Windows default is now the literal C:\Windows\System32\cmd.exe instead of %SystemRoot%\System32\cmd.exe, because a table cannot read environment variables. A Windows install on another drive sets the windows entry.

Related Issues

Follows #1854.

Target Platform

• Platform-agnostic (shared logic, no OS-specific code)
• macOS
• Linux
• Windows

Type of Change

• feat — New feature
• fix — Bug fix
• refactor — Code restructuring (no behavior change)
• perf — Performance improvement
• docs — Documentation only
• test — Adding or updating tests
• chore — Build, CI, dependencies, tooling

Cross-Platform Checklist

• OS-specific files use correct build tags (e.g., //go:build darwin)
• No darwin imports from untagged (shared) code — The One Rule
• Stub implementations added for other platforms (returning CodeNotSupported)
• N/A — This PR does not touch platform-specific code

The only platform-specific change is config_windows.go, whose shell override is removed. It is type-checked by check-cross and lint-cross. The Windows default is not run locally.

General Checklist

• Code formatted (just fmt)
• just ci passes — the same checks CI runs, on your host only (format
  check, lint, vet, build, a CGO-off type-check of the Linux and Windows
  builds, tests including a unit -race pass, vulnerability scan); CI
  runs them on macOS, Linux and Windows
• Tests added/updated for new or changed functionality
• Documentation updated (if applicable)
• PR title is a conventional commit
  subject written for users — this PR squash-merges, so the title is what
  Release Please ships in the changelog, not the commits on the branch

Additional Context

N/A

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; all three previous findings are fixed and no new actionable issues remain.

Summary

This PR adds per-platform shell commands and keyboard layouts while keeping the deprecated shell settings available until v2.

• Exec steps run through the shell command chosen for their platform.
• Keyboard layouts and primary modifiers can use a value for each platform.

_{Reviews (2) · Last reviewed commit: "fix(config): accept one shell value and ..." · Reviewed by Greptile}