hsinstall: Install Haskell software

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This is a utility to install Haskell programs on a system using stack. Even though stack has an install command, I found it to be not enough for my needs. This software tries to install the binaries, the LICENSE file and also the resources directory if it finds one. There is also an optional library component to assist with locating installed data files at runtime.

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HSInstall

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hsinstall-1.0.tar.gz [browse] (Cabal source package)
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DinoMorelli

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Versions [RSS]	1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1, 2.2, 2.5, 2.6, 2.7, 2.8
Dependencies	base (>=4.9 && <5.0), directory, filepath, hsinstall [details]
License	ISC
Copyright	2016 Dino Morelli
Author	Dino Morelli
Maintainer	Dino Morelli <dino@ui3.info>
Category	Utility
Source repo	head: darcs get http://hub.darcs.net/dino/hsinstall
Uploaded	by DinoMorelli at 2016-10-03T03:18:45Z
Distributions	LTSHaskell:2.8, NixOS:2.8, Stackage:2.8
Executables	an-app
Downloads	7375 total (50 in the last 30 days)
Rating	2.0 (votes: 1) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs available [build log] Last success reported on 2016-10-03 [all 1 reports]

Readme for hsinstall-1.0

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hsinstall

Synopsis

Install Haskell software

Description

Installations can be performed in one of two directory structures. FHS, or the Filesystem Hierarchy Standard (most UNIX-like systems) and what I call "bundle" which is a portable directory for the app and all of its files. They look like this:

bundle is sort-of a self-contained structure like this:

 $PREFIX/
   $PROJECT-$VERSION/
     bin/...
     doc/LICENSE
     resources/...

fhs is the more traditional UNIX structure like this:

 $PREFIX/
   bin/...
   share/
     $PROJECT-$VERSION/
       doc/LICENSE
       resources/...

There are two parts to hsinstall that are intended to work together. The first part is a Haskell shell script, util/install.hs. Take a copy of this script and check it into a project you're working on. This will be your installation script. Running the script with the --help switch will explain the options. Near the top of the script are default values for these options that should be tuned to what your project needs.

The other part of hsinstall is a library. The install script will try to install a resources directory if it finds one. the HSInstall library code is then used in your code to locate the resources at runtime.

Note that you only need this library if your software has data files it needs to locate at runtime in the installation directories. Many programs don't have this requirement and can ignore the library altogether.

The application in this project, in the app dir, is a demo of using the library to locate resources. It has no use other than as a live example.

The install.hs script is deliberately not being compiled so that it's flexible and hackable by developers to serve whatever additional installation needs they may have for a given project. It's also deliberately self-contained, relying on nothing other than core libraries that ship with the GHC.

Development

For developers who need to build against a local copy of hsinstall I found this technique useful. Clone a copy of the source code and install it locally:

  $ darcs clone http://hub.darcs.net/dino/hsinstall
  $ cd hsinstall
  $ stack install

In another project (nearby on your system, say), modify stack.yaml:

  extra-package-dbs:
  - ../hsinstall/.stack-work/install/x86_64-linux/lts-7.0/8.0.1/pkgdb

And then you should be able to build against this copy of hsinstall. Of course, these are just examples, the version numbers above will almost certainly be different.

Contact

Authors

Dino Morelli dino@ui3.info