Unofficial Elm for Raspberry Pi

Install

curl -L https://github.com/dmy/elm-raspberry-pi/releases/latest/download/elm.tar.gz | sudo tar zxC /usr/local/bin

The last release includes:

• elm 0.19.1
• elm-format 0.8.2
• elm-json 0.2.7 (newer official Arm releases might be available here)
• elmi-to-json 1.3.0 (needed by elm-test)

See Releases to install specific older versions.

Compatibility

• Built and tested on Raspberry Pi 4 Model B with Raspbian GNU/Linux 10 Buster (32 bits).
• It should work on all Raspberry Pis with Raspbian 10 Buster, and more generally all Debian 10 based Arm systems.
• It will not work on Raspbian/Debian 8 Jesse and 9 Stretch because some linked libraries are not compatible.
• It has also been reported to work on:
  • Raspberry Pi 4 with Ubuntu 19.10 (armhf+raspi3)

If you have an aarch64 system with a 64 bits operating system, you will need 32 bits compatibility libraries and kernel option.

Please report any success or failure on others Arm platforms.

Uninstall

$ sudo rm /usr/local/bin/elm{,-format,-json,i-to-json}

Node.js

To use Elm tools like elm-test or elm-doc-preview, you will need Node.js.
The following command will install Node.js v10 and npm:

sudo apt-get update
sudo apt-get install nodejs npm

It is advised to configure npm to store packages in a user directory.
Add to ~/.bashrc:

NPM_PACKAGES="$HOME/.npm-packages"
export PATH="$NPM_PACKAGES/bin:$PATH"
# Unset manpath so we can inherit from /etc/manpath via the `manpath` command
unset MANPATH  # delete if you already modified MANPATH elsewhere in your configuration
export MANPATH="$NPM_PACKAGES/share/man:$(manpath)"
unset NPM_PACKAGES

and run

npm config set prefix ~/.npm-packages

Then logout/login.

You probably want to update to the latest npm version at this point:

npm install -g npm@latest

Then logout/login again.

elm-test

You can install elm-test globally:

npm install -g elm-test --ignore-scripts

But it won't run without an elmi-to-json binary suitable for the platform, which is not available upstream. So we will make a link, in the expected location, to the one provided by this release:

ln -sft $(npm config get prefix)/lib/node_modules/elm-test/node_modules/elmi-to-json/bin /usr/local/bin/elmi-to-json

Known issues

• Because SMP is disabled by mistake in ghc on ARMv7, the compiler will use a single core.

Support

As these binaries are unofficial, please always confirm a bug on a platform officially supported before opening an issue at the official repositories.

If you are not sure or if the bug is specific to ARM, report it here instead.

Building from source

On Raspbian GNU/Linux 10 Buster:

elm / elm-format / elmi-to-json

• sudo apt-get install ghc cabal-install
• Clone the official repository
• Checkout the version tag
• Apply the patches included in this repository using git am
• cabal new-update
• cabal new-configure --ghc-option=-split-sections
• cabal new-build

elm-json

• curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
• git clone https://github.com/zwilias/elm-json.git
• cd elm-json
• Checkout the version tag
• cargo build --release

Tests

All elm/core tests pass successfully:

elm-test 0.19.1
---------------

Running 1268 tests. To reproduce these results, run: elm-test --fuzz 100 --seed 132427106450815 /home/pi/dev/core/tests/tests/Main.elm


TEST RUN PASSED

Duration: 31305 ms
Passed:   1268
Failed:   0