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Currently available — for the right work·France901+ Day French Streak·2026 Q1 calendar opens 06 Jan
↩ Projects · 2026 · 2026
Open source · Creator · Dhaka

WSL Linker

Open-source Windows GUI + CLI that links Windows Host directories straight to the WSL 2 Linux filesystem via native directory symlinks. Born the week Google's Antigravity IDE 2.0 broke the WSL Remote workflow — built to restore zero-latency, native-Linux-speed cross-platform development on a Windows desktop.

Role
CreatorSolo build
Period
2026 →shipping
Stack
PythonCustomTkinter · PyInstaller · Wine + Docker
Location
DhakaOSS, MIT licensed
$ wsl --mount /dev/sda3 ↳ ✓ mounted at /mnt/wsl/sda3$ ext4 read 1.8 GiB ⏎ ➜ 71ms · 4.2× faster$ █
01 · The problem

The Context

When Google's Antigravity IDE jumped to 2.0, the entire editor surface was restructured and the standard WSL Remote Plugin workflow disappeared overnight. Developers who lived inside WSL 2 (for native Linux Git, Docker, npm performance) were suddenly stranded.

Moving the code back onto the Windows host wasn't an option — cross-OS disk access (`/mnt/c/` from inside WSL) degrades Git, Docker, and npm by up to 10×. The files had to stay on the ext4 partition; only the editor's view of them needed to change.

02 · What I built

What I built

  • Native Windows directory symlinks from any host folder straight to `\\wsl.localhost\Ubuntu-24.04\home\user\project` — zero duplication, zero latency.
  • Fluent Dark Mode GUI in CustomTkinter — sleek parent-directory onboarding, live path preview that turns emerald green when ready, auto-wrapping card mappings.
  • CLI proxy runner. `wsl-linker run npm install` executes the command inside the corresponding WSL directory from a Windows shell — context-drop with one verb.
  • Single-file .exe via PyInstaller. Compiled inside an isolated Wine + Docker container so the host stays clean. `make build-docker` and ship.
  • Safe unlinker. Uses `os.rmdir` to untether the junction without ever recursing into the WSL target — the most important line of code in the project.
03 · What I learned

What I learned

A breaking IDE update is also a product opportunity. The fix didn't need to be inside the editor — a 200-line desktop utility with the right scope unblocked the entire workflow.

Open source as scratch-your-own-itch: the tool I needed for myself ships under MIT so anyone burned by the same IDE migration can clone, fork, or redistribute the .exe.

Engineering Deep Dive

High-calibre architecture decisions.

Technical Highlights

  • Native Windows directory symlinks (mklink /D) targeting WSL 2 UNC paths.
  • CustomTkinter-based Fluent Dark theme with live `<Configure>` event reflow.
  • PyInstaller single-file build inside a Wine Docker container — reproducible, host-clean.
  • CLI proxy that routes shell commands across the Windows ↔ WSL boundary.

Key Decisions & Rationale

Symlinks instead of file copy / sync

Any sync-based bridge introduces a second source of truth and inevitable drift. A native directory junction is one filesystem entry, atomic, and the OS handles every read and write.

Ship as a single .exe, not a Python package

The people who need this most — designers, QA, junior devs — should not have to install Python, PyInstaller, or configure WSL path shares. Double-click and link.

Performance Metrics

By the numbers.

MIT
Fully open source
10×
Build speed vs /mnt/c
1
Single-file .exe
05 · Preview

WSL Linker — Showcase

A look at WSL Linker in use — captures from the live product.

WSL Linker — Workspace Manager. Active registry mappings on the left, Link New Workspace flow on the right, live activity console at the bottom.

WSL Linker preview
WSL Linker preview
Downstream payoff — a WSL-Linker symlink showing up as a Claude Desktop "Linked Directory" at `\\wsl.localhost\ubuntu-24.04\home\fauzul\code\OSS\wsl-linker`. Native host tools see the WSL repo as a local folder.
Collaborate

If we worked together.

I bring high-leverage product engineering and absolute operational discipline: shipping weekly, pressure-testing user inputs, and automating delivery pipelines.

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