1 files changed, 53 insertions, 0 deletions

diff --git a/neovim/.config/nvim/lua/plugins/lsp.lua b/neovim/.config/nvim/lua/plugins/lsp.lua
index 3106fcd..6f365a0 100644
--- a/neovim/.config/nvim/lua/plugins/lsp.lua
+++ b/neovim/.config/nvim/lua/plugins/lsp.lua
@@ -41,6 +41,59 @@ return {
       capabilities = require("blink.cmp").get_lsp_capabilities(),
     })
 
+    -- yamlls only completes/validates when a schema is associated with the
+    -- file, and plain k8s manifests don't match anything by filename. So we
+    -- detect manifests by content (top-level apiVersion + kind) and add each
+    -- one to yamlls's built-in "kubernetes" schema. CRDs (ArgoCD, Traefik,
+    -- cert-manager, ...) are then resolved from apiVersion/kind by yamlls's
+    -- CRD store, which is enabled by default.
+    vim.lsp.config("yamlls", {
+      settings = { yaml = { schemas = { kubernetes = {} } } },
+    })
+
+    local function is_k8s_manifest(bufnr)
+      local has_api, has_kind = false, false
+      for _, line in ipairs(vim.api.nvim_buf_get_lines(bufnr, 0, 50, false)) do
+        has_api = has_api or line:match("^apiVersion:") ~= nil
+        has_kind = has_kind or line:match("^kind:") ~= nil
+      end
+      return has_api and has_kind
+    end
+
+    local function attach_k8s_schema(client, bufnr)
+      local path = vim.api.nvim_buf_get_name(bufnr)
+      if path == "" or not is_k8s_manifest(bufnr) then
+        return
+      end
+      local k8s = client.settings.yaml.schemas.kubernetes
+      if vim.tbl_contains(k8s, path) then
+        return
+      end
+      table.insert(k8s, path)
+      client:notify("workspace/didChangeConfiguration", { settings = client.settings })
+    end
+
+    local group = vim.api.nvim_create_augroup("yamlls_kubernetes", { clear = true })
+    vim.api.nvim_create_autocmd("LspAttach", {
+      group = group,
+      callback = function(args)
+        local client = vim.lsp.get_client_by_id(args.data.client_id)
+        if client and client.name == "yamlls" then
+          attach_k8s_schema(client, args.buf)
+        end
+      end,
+    })
+    -- Also re-check on save, so a new file picks up the schema once
+    -- apiVersion/kind have been written.
+    vim.api.nvim_create_autocmd("BufWritePost", {
+      group = group,
+      callback = function(args)
+        for _, client in ipairs(vim.lsp.get_clients({ bufnr = args.buf, name = "yamlls" })) do
+          attach_k8s_schema(client, args.buf)
+        end
+      end,
+    })
+
     require("mason-lspconfig").setup(opts)
 
     -- clangd ships with Xcode Command Line Tools already, so it's not