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site: contributing: rewrite building how-to

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@ -8,6 +8,7 @@
New contributors are always welcome. Jump in! Or [ask us](/docs.html#getting-help) to help you find a task. New contributors are always welcome. Jump in! Or [ask us](/docs.html#getting-help) to help you find a task.
## Get started as a... ## Get started as a...
### Funder ### Funder
@ -28,6 +29,7 @@ build your prosperity consciousness!
- Test installation on platforms you have access to - Test installation on platforms you have access to
- Run the latest release or developer build - Run the latest release or developer build
- Test examples and advice in the docs
- Report packaging, documentation, UX, functional bugs - Report packaging, documentation, UX, functional bugs
- Report and help analyse problems via irc/mail list/bug tracker - Report and help analyse problems via irc/mail list/bug tracker
@ -302,124 +304,84 @@ $ make haddocktest
#### Do code review #### Do code review
- review and discuss new pull requests and commits on github - review and discuss new [pull requests](http://prs.hledger.org) and commits on github
- set up for development and test the latest changes in your own repo - set up for development and test the latest changes in your own repo
- read the existing [code docs and source](#quick-links) - read the existing [code docs and source](#quick-links)
- send feedback or discuss via irc or list - send feedback or discuss via irc or list
#### Install stack and git #### Build hledger
[stack](https://github.com/commercialhaskell/stack/wiki/Downloads) is
the recommended tool for building hledger from source.
It builds haskell projects, installing required haskell libraries as needed.
It can also install GHC (the compiler) and (on windows) git, if needed.
You don't need to use stack, if you are already expert with the older
cabal tool, or even just GHC, but I won't attempt to document those
procedures; these docs assume you have downloaded and installed stack.
On Windows, you should choose the 64-bit stack download if you will be
processing >50,000 transactions at a time with hledger
([#275](https://github.com/simonmichael/hledger/issues/275)).
[git](http://git-scm.com) is the revision control tool you'll need to
fetch the latest hledger source and submit changes. On windows, stack
can install it for you. These docs assume you have installed git and
know a little about how to use it.
#### Install other optional tools
Up-to-date `alex`, `happy`, and `haddock` tools are required, but `stack` should install those for you.
Here are some optional extra tools:
- `shelltestrunner` is useful for running functional tests.
- `hasktags` is an easy way to generate editor tag files for quick source code navigation.
- `profiteur` is for reporting stack profiles.
- `hpack` regenerates cabal files when package.yaml files have been updated.
- `hoogle` is for searching source code.
You can install them all with:
```shell ```shell
$ stack install shelltestrunner hasktags profiteur hpack hoogle $ git clone http://github.com/simonmichael/hledger hledger && cd hledger && stack install # or git:
``` ```
#### Get the latest hledger source Or in more detail:
**1. Get tools**
1. [`stack`](https://github.com/commercialhaskell/stack/wiki/Downloads)
is the recommended tool for building hledger. It will also install
haskell tools and libraries as needed. You can use cabal-install
instead of stack if you prefer, but that requires more expertise;
the hledger docs assume stack.
The [download](/download.html#b) page has more tips.
2. [`git`](http://git-scm.com) is the version control tool needed to
fetch the hledger source and submit changes. On Windows, stack will
install this as well.
3. Optional tools to consider:
- `alex`, `happy`, `haddock` and `hpack` - reasonably up-to-date
versions of these tools are required; stack ensures this automatically.
- `ghcid` is a very useful tool that gives real-time feedback as you make code changes.
- `hasktags` is an easy way to generate tag files for quick source code navigation in editors like Emacs and vi.
- `shelltestrunner` is required if you want to run hledger's functional tests.
```shell
$ stack install ghcid hasktags shelltestrunner
```
**2. Get the source**
```shell
$ git clone http://github.com/simonmichael/hledger hledger # or git:
```
**3. Build/install**
```shell ```shell
$ git clone code.hledger.org hledger # aka github.com/simonmichael/hledger.git
$ cd hledger $ cd hledger
$ stack install
``` ```
<!-- This builds all the hledger packages, and installs executables in
Old instructions: `$HOME/.local/bin` (or the Windows equivalent), which you should add
to your `$PATH`.
Or you can build fewer packages to save time, eg just the CLI:
`stack install hledger`.
1. Get [GHC](https://www.haskell.org/ghc/) and [cabal-install](http://hackage.haskell.org/package/cabal-install) installed. You can also build without installing (`stack build`), and then run
I recommend the [stackage.org install guide](http://www.stackage.org/install). executables like so: `stack exec -- hledger ...`
You can see which GHC versions are officially supported in the `tested-with` field in
[hledger.cabal](http://hackage.haskell.org/package/hledger/hledger.cabal),
[hledger-ui.cabal](http://hackage.haskell.org/package/hledger-ui/hledger-ui.cabal),
[hledger-web.cabal](http://hackage.haskell.org/package/hledger-web/hledger-web.cabal).
Older versions may also work.
2. Get [git](http://git-scm.com) installed.
3. Get [GNU Make](http://www.gnu.org/software/make) installed (unless you don't care about the Makefile's conveniences).
On some platforms the command will be eg `gmake` instead of `make`.
4. Get the hledger repo:
```shell Note build/install will fetch most required dependencies automatically,
$ git clone https://github.com/simonmichael/hledger.git but not C libraries such as curses or terminfo, which you might need
``` to install yourself.
In case of trouble, see [download](/download.html#b)).
5. You might want to install or upgrade some of these haskell developer tools. Some other options useful for developer builds are `--fast` and `--file-watch`.
If you're not sure, skip this step and return to it as needed.
Be sure the cabal bin directory where these are installed (eg ~/.cabal/bin) is in your PATH.
```shell #### Add a test
$ cabal update
$ cabal install alex happy # if you get alex/happy-related errors when building hledger
$ cabal install haddock # needed to build hledger API docs
$ cabal install shelltestrunner # needed to run hledger functional tests (may need latest git version)
$ cabal install hoogle hlint # maybe useful for searching API docs and checking code
```
You'll also want a comfortable code editor, preferably with Haskell support. - identify what to test
(I use emacs + [haskell-mode](https://github.com/haskell/haskell-mode), - choose the test type: unit ? functional ? benchmark ?
or occasionally [IntelliJ IDEA](https://www.jetbrains.com/idea/download) + one of the [plugins](https://www.google.com/search?hl=en&q=intellij+plugins+haskell)). - currently expected to pass or fail ?
- figure out where it goes
6. Install haskell libs required by hledger: - write test, verify expected result
- get it committed
```shell
$ cd hledger
$ cabal sandbox init # optional
$ make installdeps # or cabal install --only-dep ./hledger-lib ./hledger [./hledger-web]
```
This will install the required dependencies from Hackage.
If you're new to cabal, you can expect problems at this stage.
The usual remedy is to ensure you start with a clean package db, eg by doing `cabal sandbox init`.
You can simplify and speed up this step a lot by commenting out
hledger-web in the `PACKAGES` list in the [Makefile](https://github.com/simonmichael/hledger/blob/master/Makefile#L41).
7. Build with cabal:
```shell
$ make cabalbuild
```
(Tip: `make cabalCMD` runs `cabal CMD` in each of the hledger packages).
8. Build with GHC:
```shell
$ make bin/hledgerdev
```
This builds hledger (and hledger-lib) with GHC directly, without using cabal,
and as quickly as possible, without optimizations (the "dev" suffix is a reminder of this).
I use and recommend this method for development, as it crosses package boundaries and ensures you are building the latest code.
However it needs some files generated by cabal build, which is why we did that first.
-->
#### Use the Makefile #### Use the Makefile
@ -458,68 +420,6 @@ $ make test -n
&& echo functest PASSED) || echo functest FAILED && echo functest PASSED) || echo functest FAILED
``` ```
#### Build or install hledger
Run `make` to see a list of build rules. You probably want `build` or `install`.
`make build` runs stack build, which downloads required haskell
dependencies and builds all hledger packages.
The resulting executables will be somewhere under .stack-work, eg in
`.stack-work/install/i386-linux/lts-3.0/7.10.2/bin/`.
```shell
$ make build
stack build
hledger-lib-0.27: configure
hledger-lib-0.27: build
hledger-lib-0.27: install
hledger-0.27: configure
hledger-0.27: build
Progress: 1/4
...
```
Note stack will install required haskell libraries, but not C
libraries such as curses or terminfo. If you get a build error, it is
likely because one of these is missing, in which case you must
identify and install it yourself using your system's package
manager. This is usually a bit harder on Windows.
`make install` runs stack install, which does everything stack build does and also
copies the executables to `~/.local/bin` or the Windows equivalent.
You should make sure this directory is in your `$PATH`, so that you can just type
`hledger` to run the latest.
```shell
$ make install
stack install
NOTE: the install command is functionally equivalent to 'build --copy-bins'
hledger-0.27: build
...
Copied executables to /Users/simon/.local/bin/:
- hledger-web
- hledger-ui
- hledger
```
You can save time and effort by building just the package(s) you're interested in.
To install just the hledger command-line tool, but not hledger-ui or (especially costly)
hledger-web, do:
```shell
$ stack install hledger
```
(This looks like the [download page](download) command for installing the latest hledger release from Stackage.
The difference is, here we are running it inside the hledger source tree, so the source version will be installed.)
#### Add a test
- identify what to test
- choose the test type: unit ? functional ? benchmark ?
- currently expected to pass or fail ?
- figure out where it goes
- write test, verify expected result
- get it committed
#### Use the REPL (GHCI) #### Use the REPL (GHCI)
These all work from the main hledger source directory (at least). These all work from the main hledger source directory (at least).
@ -595,10 +495,10 @@ Follow the usual github workflow:
If you're new to this process, [help.github.com](http://help.github.com) may be useful. If you're new to this process, [help.github.com](http://help.github.com) may be useful.
#### Join the contributors list #### Add yourself to the contributor list
- after getting one or more patches committed, read and sign the [contributor list & agreement](contributors.html) - after getting something into the master branch, read and sign the [contributor list & agreement](contributors.html)
- or, [ask](#how-to-get-help) to be added - or, [ask](/docs.html#get-help) to be added
### Technical Writer ### Technical Writer
@ -786,8 +686,8 @@ don't run make setversion.
- [tweet] - [tweet]
## Project overview
## Project overview
### Mission, principles, goals ### Mission, principles, goals
The hledger project aims to produce: The hledger project aims to produce:
@ -871,8 +771,8 @@ Dev sprint/party #2 was on 2015/10/10.
## Code architecture
## Code architecture
### hledger ### hledger
There are two core cabal packages: There are two core cabal packages:
@ -1017,6 +917,7 @@ makefile for instructions). This rebuilds automatically when haskell
files change in any of the hledger{-lib,,-web} packages. files change in any of the hledger{-lib,,-web} packages.
<script async defer src="https://buttons.github.io/buttons.js"></script> <script async defer src="https://buttons.github.io/buttons.js"></script>
## Quick links ## Quick links
<style> <style>