Allow adding providers add-hoc after blink.cmp has been setup

[abeldekat]

Feature Description

Thanks for the plugin!

My config uses mini.deps and has support for sql, using vim-dadbod-completion.

However, I don't need it that often. As such, I only load sql plugins on a key command that is available when the filetype of the buffer is sql.

Using nvim-cmp, I could add a new source dynamically:

local has_nvim_cmp, cmp = pcall(require, "cmp")
if has_nvim_cmp then cmp.setup.buffer({ sources = { { name = "vim-dadbod-completion" } } }) 

I did not discover such an option in blink.cmp, but it is possible:

    --
    -- HACK: There is no public method to add a provider once blink has been setup:
    --
    local new_provider_in_config = { name = "Dadbod", module = "vim_dadbod_completion.blink" }
    local new_provider_id = "dadbod"

    local config = require("blink.cmp.config")
    -- Add to config, otherwise internal checks fail:
    -- HACK: With this hack, do not configure enabled_providers as function in blink setup!
    ---@diagnostic disable-next-line: param-type-mismatch -- enabled_providers, function or string...
    table.insert(config.sources.completion.enabled_providers, new_provider_id)
    -- HACK: Adding to config directly bypasses validation for new_provider_in_config!
    config.sources.providers[new_provider_id] = new_provider_in_config
    -- Add to internal providers:
    local sources = require("blink.cmp.sources.lib")
    local provider = require("blink.cmp.sources.lib.provider")
    -- Line taken from blink.cmp.sources.lib.init, get_enabled_providers:
    -- ...initialize the provider if it hasn't been initialized yet...
    sources.providers[new_provider_id] = provider.new(new_provider_id, new_provider_in_config)

    -- Now the public function can be used. Only dadbod will be relaoded
    require("blink-cmp").reload(new_provider_id)

The difference in loading between nvim-cmp and blink.cmp is currently also observable in the sql extra in LazyVim. Without the blink.cmp extra, vim-dadbod-completion is only added when the type of the buffer is sql. When the blink.cmp extra is activated, vim-dadbod-completion is always added when blink.cmp activates.

Would you be willing to add a public function to blink.cmp that registers and activates a new provider? If so, I would gladly submit a PR. I think the code above would be of use in the implementation.

Related:

• Allow providers to disable themselves
• PR Sources v2

[Saghen]

Yeah, makes sense, I'll add it as part of sources v2

[abeldekat]

Thanks!

[Saghen]

You should be able to use require('blink.cmp').add_provider(id, config) to add providers at runtime now. There's also a new sources.per_filetype that could be useful for enabling just dadbod in sql. Lmk if you run into any issues

[abeldekat]

Thanks!