The qr-repa package

[ Tags: bsd3, data, library, program ] [ Propose Tags ]

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Dependencies aeson, base (>=4.7 && <5), bytestring, cryptonite, directory, haskell-qrencode, jose-jwt, lens, qr-repa, repa, repa-devil, vector [details]
License BSD3
Copyright Copyright: (c) 2016 Vanessa McHale
Author Vanessa McHale
Category Data
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Source repository head: git clone
Uploaded Thu Dec 15 03:57:58 UTC 2016 by vmchale
Distributions NixOS:
Executables qrpipe
Downloads 185 total (77 in the last 30 days)
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Status Docs not available [build log]
All reported builds failed as of 2016-12-15 [all 3 reports]
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  • Data
    • QRCodes
      • Data.QRCodes.Repa


Maintainer's Corner

For package maintainers and hackage trustees

Readme for qr-repa-

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#QR Imager Library This is a library to generate .png files from QR codes.

##Dependencies The library depends on the C library which you will need to install separately.

##Usage The library exports main functions - createQRCode and byteStringToQR - and their secured/signed versions. The first takes any object that is an instance of ToJSON and writes an image to file, while the second takes a (strict) bytestring and writes it to file.


###Installation For building haskell, the best tool is currently Install it, and then type

stack install --install-ghc

in the appropriate directory, and it will be installed on your path.


Compiling will generate an executable called QRPipe which reads from stdin and outputs a file as the second argument, e.g.

echo 'My name is:" | qrpipe "nametag.png"