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Editorial Team
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Asked: 2026-05-26T06:53:09+00:00

I’m following along with the yesod tutorial on the yesod wiki, and hitting a

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I’m following along with the yesod tutorial on the yesod wiki, and hitting a wall linking to an external css framework (blueprint).

I created the site using the scaffolding tool, and everything has been working correctly so far using ‘yesod devel’.

I’ve downloaded the blueprint files into static/css/blueprint and added the following to default-layout-wrapper.hamlet:

!!!
<html>
    <head
        <title>#{pageTitle pc}
        <link rel=stylesheet type=text/css media=screen href=@{StaticR css_blueprint_screen_css}>
        <link rel=stylesheet type=text/css media=print href=@{StaticR css_blueprint_print_css}>
        ^{pageHead pc}
    <body
        ^{pageBody pc}

The error I’m getting is:

Foundation.hs:98:27:
    Not in scope: `css_blueprint_screen_css'
    In the result of the splice:
      $(hamletFile "hamlet/default-layout-wrapper.hamlet")
    To see what the splice expanded to, use -ddump-splices
    In the first argument of `hamletToRepHtml', namely
      `$(hamletFile "hamlet/default-layout-wrapper.hamlet")'
    In the expression:
      hamletToRepHtml
        ($(hamletFile "hamlet/default-layout-wrapper.hamlet"))

Foundation.hs:98:27:
    Not in scope: `css_blueprint_print_css'
    In the result of the splice:
      $(hamletFile "hamlet/default-layout-wrapper.hamlet")
    To see what the splice expanded to, use -ddump-splices
    In the first argument of `hamletToRepHtml', namely
      `$(hamletFile "hamlet/default-layout-wrapper.hamlet")'
    In the expression:
      hamletToRepHtml
        ($(hamletFile "hamlet/default-layout-wrapper.hamlet"))
Starting development server...

I’m on a Mac, running ghc-7.0.3… I thought I understand how StaticR works, but I’m obviously missing something. Any ideas?

Thanks in advance,
Neil

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1 Answer

  1. Editorial Team

    Do you need to touch Settings/StaticFiles.hs? In general, yesod devel or yesod build will handle that for you automatically, but it’s the first thing that comes to mind.

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