You open a repo, push your first commit, and everything seems fine—until VS Code stares back with that quiet, mocking error: “command hg not found.” Mercurial and VS Code are old acquaintances that never really exchanged numbers. But when you connect them properly, they form one of the cleanest version control experiences in modern development.
Mercurial is a distributed version control system known for stability and simplicity. It keeps history clean, merges gracefully, and avoids the ritual sacrifices sometimes demanded by Git. Visual Studio Code provides the living room—extensions, terminals, and a UI that unifies workspaces. Pair them right, and you get a smooth identity‑driven editing setup with no manual juggling between shells.
The core integration works through the official Mercurial extension in VS Code. Once installed, it listens for repository actions and pipes those commands through your system path. That means commits, diffs, and pushes appear directly in the Source Control panel instead of a separate terminal window. Identity and permissions come from whatever credentials your remote host uses—often SSH keys or HTTPS credentials linked to your user account. Nothing exotic, just efficient.
If you run into permission quirks, check credential caching and SSH configurations first. VS Code inherits most of its authentication context from your local environment, so stale keys or wrong file permissions are the usual suspects. Map local users cleanly to your remote’s permission model, whether it is Bitbucket, Phabricator, or a self-hosted server. Treat hg push failures as signals to revisit your SSH agent, not as signs of moral weakness.
Benefits of using Mercurial VS Code together: