Building a Login Panel with PostgreSQL Authentication in Rust (egui + sqlx)

Login + database auth sounds simple… until you build it.

Just finished integrating authentication into Level 3 of my Teacher Assistant desktop app.

Instead of a tutorial-style guide, I documented the real engineering process:

• connecting egui → PostgreSQL using sqlx
• structuring login state inside update()
• password hashing with Argon2
• common errors (TRUNCATE notice, DB auth failure, trait issues, query mismatches)
• and the final working login → dashboard flow

Sharing the real dev journey, not just the happy path.

👉 Full write-up: Login with PostgreSQL Authentication

Feedback and suggestions are welcome!

Thanks for reading🌱
— Manjusha (Techn0tz)