296 lines
		
	
	
		
			11 KiB
		
	
	
	
		
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			296 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
---
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title: hledger Developer Guide
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---
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# Developer guide
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**Quick links:**
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**hledger released version**\
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[release notes](NEWS.html)\
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[hledger](http://hackage.haskell.org/package/hledger),
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[hledger-web](http://hackage.haskell.org/package/hledger-web),
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[hledger-interest](http://hackage.haskell.org/package/hledger-interest),
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[hledger-irr](http://hackage.haskell.org/package/hledger-irr),
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[hledger-vty](http://hackage.haskell.org/package/hledger-vty),
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[hledger-chart](http://hackage.haskell.org/package/hledger-chart),
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[hledger-lib](http://hackage.haskell.org/package/hledger-lib)
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packages\
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<!-- [hledger-web demo](http://demo.hledger.org) -->
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<!-- <script type="text/javascript" src="http://haskell.org/hoogle/datadir/resources/jquery-1.4.2.js"></script> -->
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<script type="text/javascript" src="http://haskell.org/hoogle/datadir/resources/hoogle.js"></script>
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<form action="http://haskell.org/hoogle/" method="get" style="display:inline; margin:0; padding:0;">
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<input type="hidden" name="prefix" value="+hledger +hledger-lib +hledger-web +hledger-vty +hledger-chart" />
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<span style="white-space:nowrap;"
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><input type="text" name="hoogle" id="hoogle" accesskey="1" size="30"
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/><input type="submit" value="search API with hoogle"
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/></span>
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</form>
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**hledger development version**<br>
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[Get it](#how-to-set-up-for-development),
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[browse it](http://github.com/simonmichael/hledger),
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[changes](http://github.com/simonmichael/hledger/commits),
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[CHANGES](http://starlogs.net/#simonmichael/hledger) (turn up your volume!)
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<!-- [hledger-web dev demo](http://demo.hledger.org:5001) -->
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<br>
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[build](http://hydra.cryp.to:8080/project/hledger),
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[dependencies](http://packdeps.haskellers.com/feed/?needle=hledger)
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<!-- [haddock coverage](http://hledger.org/profs/haddock-coverage), -->
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<!-- [unit test coverage](http://hledger.org/profs/coverage/hpc_index_fun.html), -->
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<!-- [benchmark](http://hledger.org/profs/latest.bench) -->
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<!-- [profile](http://hledger.org/profs/latest.prof), -->
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<!-- [heap](http://hledger.org/profs/latest.ps) -->
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reports\
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<!-- [developer notes](http://github.com/simonmichael/hledger/NOTES.org)\ -->
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<!-- [browse dev API docs](http://hledger.org/api/frames.html) -->
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\
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## How to..
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New contributors of all levels are most welcome.
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Here are some tips to help you get productive on the hledger project.
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### how to suggest enhancements
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Suggestions and feature requests are easy to make, less easy to
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research, and hard to implement.  And, alas! We don't have a team of
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sleek, well-fed, idle coders standing by to implement everybody's
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wishes. (Please
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[help change that](#how-to-set-up-for-hledger-development)).
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Wishes *are* welcome feedback, but we don't want them to pile up and
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obscure bugs and other developer priorities, so we manage them with discussion
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and optionally as cards on a trello board. 
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The current recommendation is
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1. **discuss/research first**\
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   Is your wish already on the [trello wishlist/planning board](http://hledger.org/trello)
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   or [bug tracker](http://hledger.org/bugs) ?\
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   Perhaps discuss it on [irc](irc://irc.freenode.net/#ledger), the [mail list](http://hledger.org/list) or trello ?
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2. **report wishes on trello, bugs in the bug tracker**\
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   Is it a problem with the released and documented functionality ? report in the [bug tracker](http://hledger.org/bugs)\
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   Is it a wish ? add a card on the [trello board](http://hledger.org/trello), if needed
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3. **don't sweat it**\
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   Or, do what you think best. If a wish does land in the bug tracker, it gets the WISH label.
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### how to report problems
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- check for related issues in the [bug tracker](http://hledger.org/bugs) or in the [mail list archive](http://hledger.org/list)
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- discuss/confirm the issue on irc or list
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- report new issues in the bug tracker
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<!-- - test and share problem journal snippets at paste . hledger.org -->
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### how to help with testing
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- review and test our documentation and web presence
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- download and test the binaries on your platform
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- test installing via cabal
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- use the tools and test functionality, usability, browser compatibility, ui layout etc.
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- check that `hledger test` reports no failures
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- [run the developer tests](#how-to-run-the-tests)
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- discuss/report problems via irc/mail list/bug tracker
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### how to help with bug tracking
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- get to know the [bug tracker](http://hledger.org/bugs) and its contents
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- research and update issues
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- some convenient url shortcuts:  
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  [`hledger.org/bugs`](http://hledger.org/bugs)  
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  [`hledger.org/bugs/new`](http://hledger.org/bugs/new)  
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  `hledger.org/bugs/N`
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### how to set up for development
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1. get an up-to-date [ghc](http://haskell.org/ghc), at least 7.0 and preferably 7.6
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2. there's probably no need to install the [haskell platform](http://haskell.org/platform) now, but you could
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3. it's probably worth getting the latest and best cabal: `cabal update; cabal install cabal-install`
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4. ensure you have [git](http://git-scm.com) installed
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5. the hledger Makefile assumes GNU Make, so on some platforms you may need to spell "make" as "gmake"
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- get the hledger repo:
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        git clone git@github.com:simonmichael/hledger.git
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        cd hledger
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- install packages required to build hledger and add-ons, or as many of them as possible:
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        cabal update
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        make install
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    This will also try to cabal install development builds of the hledger
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    executables, so ghc-pkg unregister those afterwards if you don't want
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    that.
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- try building with make:
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        make bin/hledgerdev
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    This is usually quicker and simpler than fiddling with multiple cabal packages during development.
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    Note this executable will not be as optimised as the normal cabal build, and has the "dev" suffix
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    as a reminder of this.
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- try auto-building with sp:
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        make auto   # or autoweb
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    You'll need to follow the instructions to install `sp`.
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    This is how I do most hledger development. It will recompile whenever you save changes to source files.
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### how to get your changes accepted
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Follow the usual github workflow:
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- fork the main hledger repo on github,
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- git clone it to your local machine,
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- git commit, after (?) pulling and merging the latest upstream changes
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- git push back to github,
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- open a pull request on github,
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- follow up on any discussion there.
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If you're new to this process, [help.github.com](http://help.github.com) may be useful.
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### how to improve the documentation
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- get familiar with the website and documentation online, review and test
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- get familiar with the site/doc source files (see Makefile)
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- set up for hledger development
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- send patches with names prefixed with "doc: " (or "site: ")
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### how to run the tests
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- set up for hledger development
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- cabal install shelltestrunner
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- make test
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### how to add a test
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- identify what to test
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- choose the test type: unit ? functional ? benchmark ?
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- currently expected to pass or fail ?
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- figure out where it goes
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- write test, verify expected result
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- get it committed
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### how to fix a bug or add a feature
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- research, discuss, validate the issue/feature on irc/list/bug tracker
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- look for related tests, run the tests and check they are passing
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- add a test ?
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- develop a patch
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- include any related issue numbers in the patch name, eg: "fix for blah blah (#NNN)"
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- get it committed
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### how to become a contributor
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- after getting one or more patches committed, read and sign the [contributor list & agreement](CONTRIBUTORS.html)
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- or, [ask](#how-to-get-help) to be added
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### how to do code review
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- review and discuss new pull requests and commits on github
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- set up for development and test the latest changes in your own repo
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- read the existing [code docs and source](#quick-links)
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- send feedback or discuss via irc or list
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### how to help with packaging
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- package hledger for linux distros, macports, etc.
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- develop mac/windows installers
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- find and assist distro packagers/installer developers
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### how to help with project management
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- clarify/update goals and principles
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- monitor, report on project progress and performance
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- research, compare and report on successful projects, related projects
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- identify collaboration opportunities
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- marketing, communication, outreach
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- release management, roadmap planning
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## Project overview
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A rough overview/blueprint for the hledger project.
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### mission, principles, goals
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The hledger project aims to produce:
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- a practical, accessible, dependable tool for end users
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- a useful library and toolbox for finance-minded haskell programmers
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- a successful, time-and-money-solvent project within a thriving ecosystem of financial software projects.
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### roles and activities
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- newcomer/potential user
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- user
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- library user
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- field tester
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- bug wrangler
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- support
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- documentor
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- qa
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- developer
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- packager
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- communicator
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- project manager
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### documentation
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- website
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- user manual
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- developer guide
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- code documentation: haddock
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- various developer reports
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- developer notes outline
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- blurbs: in cabal files, module headers, google project, repo message of the day..
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### quality assurance
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- unit tests (HUnit, make unittest)
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- functional tests (shelltestrunner, make functest)
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- performance tests (simplebench, make bench)
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- documentation tests (make haddocktest + manual)
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- ui tests (manual)
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- installation tests (manual)
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### code
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- the hledger repo is hosted on github.com:
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  [http://github.com/simonmichael/hledger](http://github.com/simonmichael/hledger).
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  (You can also jump there via [hledger.org/code](http://hledger.org/code) or code.hledger.org).
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<!-- ### release process -->
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<!-- ### roadmap -->
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<!-- ### communication and collaboration -->
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<!-- ### web presence and hosting setup -->
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<!-- ### finances and other resources -->
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<!-- ### licensing and legal issues -->
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<!-- ### contributors and credits -->
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## Related projects
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- I have a few older bits and pieces [here](http://joyful.com/Ledger)
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- John Wiegley's [ledger](http://wiki.github.com/jwiegley/ledger) inspired hledger.
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- [ledger-autosync](https://bitbucket.org/egh/ledger-autosync) downloads and converts bank OFX data for ledger or hledger
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- Tim Docker's [ledger-reports](http://dockerz.net/repos/ledger-reports) builds on hledger to generate
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  [html reports](http://dockerz.net/software/hledger_report_sample/report.html)
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- [beancount](https://furius.ca/beancount/) is another ledger clone, in python
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- h/ledger inspired Omari Norman's [penny](https://github.com/massysett/penny)
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- and Uwe Hollerbach's [umm](http://hackage.haskell.org/package/UMM)
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- [http://darcsden.com/alex/bill](http://darcsden.com/alex/bill), [http://darcsden.com/alex/bill-atomo](http://darcsden.com/alex/bill-atomo), [http://darcsden.com/alex/bill-scheme](http://darcsden.com/alex/bill-scheme) - a time-tracking and billing app
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- [http://darcsden.com/ozamosi/debts](http://darcsden.com/ozamosi/debts) - Silly debt tracking webapp
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- [http://darcsden.com/housetab-multi](http://darcsden.com/dbp/housetab-multi), [housetab.org](http://housetab.org) - a webapp to manage expenses between a group of friends.
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