Merge pull request #4159 from github/robertbrignull/deprecate_2.20.7

Remove support for CodeQL CLI versions older than 2.20.7

Author: robertbrignull

extensions/ql-vscode/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## [UNRELEASED]
 
+- Remove support for CodeQL CLI versions older than 2.20.7. [#4159](https://github.com/github/vscode-codeql/pull/4159)
+
 ## 1.17.5 - 02 October 2025
 
 - Add new command "CodeQL: Trim Overlay Base Cache" that returns a database to the state prior to overlay evaluation, leaving only base predicates and types that may later be referenced during overlay evaluation. [#4082](https://github.com/github/vscode-codeql/pull/4082)

extensions/ql-vscode/src/codeql-cli/cli.ts

@@ -1902,7 +1902,7 @@ function shouldDebugCliServer() {
 export class CliVersionConstraint {
   // The oldest version of the CLI that we support. This is used to determine
   // whether to show a warning about the CLI being too old on startup.
-  public static OLDEST_SUPPORTED_CLI_VERSION = new SemVer("2.19.4");
+  public static OLDEST_SUPPORTED_CLI_VERSION = new SemVer("2.20.7");
 
   constructor(private readonly cli: CodeQLCliServer) {
     /**/

extensions/ql-vscode/supported_cli_versions.json

@@ -3,6 +3,5 @@
   "v2.22.4",
   "v2.21.4",
   "v2.20.7",
-  "v2.19.4",
   "nightly"
 ]