Thanks, and sorry about posting it here. It looks I did this by old memory, back when Yesod was mainly discussed in web-devel list. 2012/2/11 Greg Weber :

This question seems Yesod specific - I am forwarding to the Yesod mail list.

On Fri, Feb 10, 2012 at 2:59 PM, Michael Lazarev wrote:

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Hello everybody!

In one app I develop, users will not register by themselves. Instead, they will be added to the system and assigned roles by administrator. For that case, HashDB auth plugin looked the right choice for me.

TL;DR: The setup proposed in Yesod.Auth.HashDB documentation didn't work for me. Finally I found the solution. I wonder if putting User entity definition in Yesod.Auth.HashDB module is a good idea.

There are three reasons I post this: to publish my solution for anybody having the same problem, to ask a question if I am doing it right, and, last but not least, to submit a feedback to Yesod authors.

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