@jdx I realized that ls-remote is meant to be context-free and not rely on mise.toml, which is what I did in #8875 , let me know if the previous behavior is still valid, but I don't think ls-remote should read anything from mise.toml.

I realized that ls-remote is meant to be context-free and not rely on mise.toml.

I don't think so

Greptile Summary

This PR fixes two related issues: a regex bug in split_bracketed_opts that caused the greedy first capture group to swallow inner TOML array brackets (e.g. channels=[\"conda-forge\", \"bioconda\"]), and threads an explicit opts: Option<ToolVersionOptions> parameter through the version-listing call chain so that ls-remote can pass inline CLI opts directly to backends, bypassing both the version cache and mise.toml config opts.

Confidence Score: 5/5

Safe to merge — no P0/P1 issues found; previous thread concerns about cached-backend opts have been addressed by threading opts as an explicit parameter

The regex fix is correct and necessary. The opts-threading design is clean and avoids the cached-backend pitfall by never relying on self.ba.opts inside the backend implementation. The only finding is a P2 style inconsistency (missing warn! for invalid versions in the opts path).

No files require special attention; all changes are consistent and well-structured

Important Files Changed

Sequence Diagram

sequenceDiagram
    participant User
    participant LsRemote
    participant BackendArg
    participant Backend as Backend (trait)
    participant Cache as VersionCacheManager
    participant VfoxBackend
    participant Config

    User->>LsRemote: mise ls-remote 'vfox-pixi:samtools[channels=["bioconda"]]'
    LsRemote->>LsRemote: run() → run_single(config, plugin)

    note over LsRemote: Extract inline opts from tool_arg.ba.opts
    LsRemote->>BackendArg: ta.ba.opts.clone()
    BackendArg-->>LsRemote: Some(opts) — channels=["bioconda"]

    LsRemote->>Backend: list_remote_versions_with_info(config, Some(opts))

    alt opts is Some — inline opts path
        note over Backend: Cache bypass (results depend on opts)
        Backend->>VfoxBackend: _list_remote_versions_with_opts(config, Some(opts))
        VfoxBackend->>VfoxBackend: inline opts present → use opts.opts directly
        note over VfoxBackend: config.get_tool_opts() NOT called
        VfoxBackend->>VfoxBackend: vfox.backend_list_versions(pathname, tool_name, inline_opts)
        VfoxBackend-->>Backend: Vec<VersionInfo>
        Backend-->>LsRemote: filtered Vec<VersionInfo>
    else opts is None — normal cached path
        Backend->>Cache: get_or_try_init_async(...)
        alt cache miss
            Cache->>Backend: _list_remote_versions(config)
            Backend->>VfoxBackend: _list_remote_versions(config)
            VfoxBackend->>VfoxBackend: delegates to _list_remote_versions_with_opts(config, None)
            VfoxBackend->>Config: get_tool_opts(&ba)
            Config-->>VfoxBackend: ToolVersionOptions from mise.toml
            VfoxBackend-->>Cache: Vec<VersionInfo>
        end
        Cache-->>Backend: cached Vec<VersionInfo>
        Backend-->>LsRemote: Vec<VersionInfo>
    end

    LsRemote->>LsRemote: filter by prefix, print versions
    LsRemote-->>User: version list output

_{Reviews (7): Last reviewed commit: "propagate opts param to backends, remove..." | Re-trigger Greptile}

I don't think so

So ls-remote should read from mise.toml as well?

I got the impression it's more of a one-off command, since there's no mention of mise.toml in https://mise.jdx.dev/cli/ls-remote.html

Should I consider both cases in this PR (with/without mise.toml)? Currently on main I can only query for a package if the channels have been defined in a project's mise.toml, not outside of it.

The regex fix in backend_arg.rs looks good — without it, TOML arrays in bracket opts break because the greedy (.+) matches the wrong closing bracket.

However, I have concerns about the other two changes:

ls_remote.rs — forcing empty opts:
ls-remote should still read from mise.toml when no inline opts are provided. If someone has a complex tool like ruby with a bunch of tool options in config, they should still be able to run mise ls-remote ruby without re-specifying everything. Force-inserting empty opts and bypassing the backend cache breaks that.

vfox.rs — inline opts override config opts:
The precedence change (inline > config) is actually correct — if you explicitly pass opts on the CLI they should win. Note that the other backends (github, http, s3) all have the same pre-existing issue where config silently overrides inline opts, but that's out of scope for this PR.

I'd suggest keeping the regex fix and the vfox.rs precedence change, but dropping the ls_remote.rs changes.

This comment was generated by Claude Code.

@jdx I've reenabled reading from mise.toml in ac7ab17

I dug into this more and my earlier feedback was wrong. The TOOLS cache looks up backends by short name, so the cached backend has its own BackendArg from when it was first created (config/registry load time). Inline CLI opts on the ToolArg.ba are on a different BackendArg and get silently dropped after the cache lookup.

So there's no precedence bug — inline bracket opts on ls-remote simply don't reach the backend at all without bypassing the cache. The ls_remote.rs cache bypass is necessary for inline opts to work, and the vfox.rs check on this.ba.opts only works because the bypassed backend carries the CLI's BackendArg.

That said, this cache bypass + vfox-specific opts check is still vfox-only. If we want inline opts on ls-remote to work for other backends (github, http, s3), they'd need similar treatment. Could this be generalized — e.g., passing opts through to _list_remote_versions rather than each backend reading them independently?

This comment was generated by Claude Code.

@jdx ls_remote.rs changes removed in the latest revision.

So there's no precedence bug — inline bracket opts on ls-remote simply don't reach the backend at all without bypassing the cache. The ls_remote.rs cache bypass is necessary for inline opts to work, and the vfox.rs check on this.ba.opts only works because the bypassed backend carries the CLI's BackendArg.

@jdx I've re-added the cache bypass in ls_remote.rs in 96c9927

That said, this cache bypass + vfox-specific opts check is still vfox-only. If we want inline opts on ls-remote to work for other backends (github, http, s3), they'd need similar treatment. Could this be generalized — e.g., passing opts through to _list_remote_versions rather than each backend reading them independently?

Probably, I don't know enough about the other backends, for now I'm only focusing on this so that I can complete my vfox-pixi backend.

The vfox-only approach isn't going to work — we need inline opts to be handled generically so all backends (github, http, s3, etc.) benefit from the same fix. Rather than each backend independently checking ba.opts, the opts should be passed through from ls_remote.rs into the backend's _list_remote_versions call so backends don't need to know where the opts came from.

The regex fix in backend_arg.rs is good and can stay as-is.

This comment was generated by Claude Code.

To expand on my previous comment — the ls_remote.rs cache bypass is a band-aid for a deeper problem: inline opts on BackendArg get silently dropped at the TOOLS cache boundary everywhere, not just in ls-remote. The cache keys on ba.short only, and BackendArg's Hash/Eq impls ignore opts entirely. This needs to be solved generically rather than per-call-site.

The regex fix in backend_arg.rs is solid — that should stay regardless.

This comment was generated by Claude Code.

@jdx I've removed the vfox-specific code and added a function called _list_remote_versions_with_opts that by default just calls _list_remote_versions, but can be overriden by the backends that use opts (i.e. conda, github, http, s3 and vfox)., the rest of the backends are unchanged. I did this because it felt cleaner and to minimize the changes to the other backends, but another approach would be to add an opts parameters to _list_remote_versions that is ignored in the backends that do not use opts.

@jdx anything else that should be addressed? Would you prefer I add opts to _list_remote_versions and update all the backends or is the current approach with _list_remote_versions_with_opts ok?

going to pass for now, sorry