yaml-union: Read multiple yaml-files and override fields recursively

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

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Versions [RSS] [faq] 0.0.1, 0.0.2, 0.0.3
Change log changelog.md
Dependencies aeson, base (==4.*), bytestring, directory, filepath, optparse-applicative, text, unix, unordered-containers, vector, yaml, yaml-union [details]
License BSD-3-Clause
Author Michel Kuhlmann
Maintainer michel@kuhlmanns.info
Category Data
Home page https://github.com/michelk/yaml-union.hs
Uploaded by michelk at 2017-11-10T09:19:02Z
Distributions NixOS:0.0.3
Executables yaml-concat, yaml-union, yaml-validate
Downloads 1943 total (20 in the last 30 days)
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Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2017-11-10 [all 1 reports]




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Readme for yaml-union-0.0.3

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Command-line program to union yaml-files

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The command-line program yaml-union unions yaml-files recursively. When a key appears in multiple files, the values will be overridden with the order given on the command-line. If both values are hashes, the overrides will be done recursively.

The program could be useful in conjunction with pandoc when passing in meta-data from external files.


yaml-union -d meta1.yaml meta2.yaml | pandoc text.md --template tmpl.html


git clone https://github.com/michelk/yaml-union.hs
cd yaml-unions.hs
stack install


  • Optional define yaml-entries on the command-line eg yaml-union -V blue=blau col.yaml