feat: add configuration version field

Author: ldez

.golangci.next.reference.yml

@@ -4,6 +4,8 @@
 # This file is not a configuration example,
 # it contains the exhaustive configuration with explanations of the options.
 
+version: "2"
+
 linters:
   # Disable all linters.
   # Default: false

jsonschema/golangci.next.jsonschema.json

@@ -481,7 +481,12 @@
   },
   "type": "object",
   "additionalProperties": false,
+  "required": ["version"],
   "properties": {
+    "version": {
+      "type": "string",
+      "default": "2"
+    },
     "run": {
       "description": "Options for analysis running,",
       "type": "object",

pkg/config/config.go

@@ -20,6 +20,8 @@ type Config struct {
 	cfgDir   string // Path to the directory containing golangci-lint config file.
 	basePath string // Path the root directory related to [Run.RelativePathMode].
 
+	Version string `mapstructure:"version"`
+
 	Run Run `mapstructure:"run"`
 
 	Output Output `mapstructure:"output"`

pkg/golinters/copyloopvar/testdata/copyloopvar.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   copyloopvar:
     check-alias: true

pkg/golinters/cyclop/testdata/cyclop.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   cyclop:
     max-complexity: 15

pkg/golinters/decorder/testdata/decorder_custom.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   decorder:
     dec-order:

pkg/golinters/depguard/testdata/depguard.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   depguard:
     rules:

pkg/golinters/depguard/testdata/depguard_additional_guards.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   depguard:
     rules:

pkg/golinters/depguard/testdata/depguard_ignore_file_rules.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   depguard:
     rules:

pkg/golinters/dupl/testdata/dupl.yml

@@ -1,3 +1,5 @@
+version: "2"
+
 linters-settings:
   dupl:
     threshold: 20