Add feature: elm-lang

Author: CodeMan99

src/elm-lang/NOTES.md

@@ -0,0 +1,9 @@
+# Elm-lang
+
+Installs the [Elm](https://elm-lang.org) compiler following the [linux install](https://github.com/elm/compiler/blob/master/installers/linux/README.md) documentation.
+
+```shell
+elm --help
+```
+
+See the [language guide](https://guide.elm-lang.org), [examples](https://elm-lang.org/examples), and [documentation](https://elm-lang.org/docs) for more information on the language.

src/elm-lang/devcontainer-feature.json

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+{
+    "id": "elm-lang",
+    "name": "Elm Language Compiler (via Github Releases)",
+    "version": "0.1.0",
+    "documentationURL": "https://github.com/CodeMan99/features/tree/main/src/elm-lang",
+    "description": "Install the elm language compiler and related tools",
+    "options": {
+        "version": {
+            "default": "0.19.1",
+            "description": "Specify the compiler version",
+            "type": "string"
+        },
+        "elmPrefix": {
+            "default": "/usr/local/bin",
+            "description": "Where the \"elm\" binary will be installed",
+            "type": "string"
+        },
+        "installFormat": {
+            "default": true,
+            "description": "Install the \"elm-format\" command (via npm if installed)",
+            "type": "boolean"
+        },
+        "installReview": {
+            "default": true,
+            "description": "Install the \"elm-review\" command (via npm if installed)",
+            "type": "boolean"
+        },
+        "installTest": {
+            "default": true,
+            "description": "Install the \"elm-test\" command (via npm if installed)",
+            "type": "boolean"
+        }
+    },
+    "customizations": {
+		"vscode": {
+			"extensions": [
+				"Elmtooling.elm-ls-vscode"
+			]
+		}
+    },
+    "installsAfter": [
+        "ghcr.io/devcontainers/features/node"
+    ]
+}

src/elm-lang/install.sh

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+#!/usr/bin/env bash
+
+set -e
+
+VERSION="${VERSION:-0.19.1}"
+ELM_PREFIX="${ELMPREFIX:-/usr/local/bin}"
+INSTALL_FORMAT="${INSTALLFORMAT:-true}"
+INSTALL_REVIEW="${INSTALLREVIEW:-true}"
+INSTALL_TEST="${INSTALLTEST:-true}"
+
+apt_get_update()
+{
+    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update -y
+    fi
+}
+
+# Checks if packages are installed and installs them if not
+check_packages() {
+    if ! dpkg -s "$@" > /dev/null 2>&1; then
+        apt_get_update
+        apt-get -y install --no-install-recommends "$@"
+    fi
+}
+
+export DEBIAN_FRONTEND=noninteractive
+check_packages curl ca-certificates
+
+curl --location --output elm.gz "https://github.com/elm/compiler/releases/download/${VERSION}/binary-for-linux-64-bit.gz"
+gunzip elm.gz
+install elm "${ELM_PREFIX}"
+
+declare -a PACKAGES
+
+if [[ "${INSTALL_FORMAT}" == "true" ]]; then
+    PACKAGES+=("elm-format")
+fi
+
+if [[ "${INSTALL_REVIEW}" == "true" ]]; then
+    PACKAGES+=("elm-review")
+fi
+
+if [[ "${INSTALL_TEST}" == "true" ]]; then
+    PACKAGES+=("elm-test")
+fi
+
+if command -v npm &> /dev/null && [[ ${#PACKAGES[@]} -gt 0 ]]; then
+    npm install -g "${PACKAGES[@]}"
+fi

test/elm-lang/elm__debian__with_npm_tools.sh

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+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "Elm-lang compiler binary is executable" test -x /usr/local/bin/elm
+check "elm --version" elm --version
+check "npm tool: elm-format" test -x "$(npm prefix -g)/bin/elm-format"
+check "npm tool: elm-review" test -x "$(npm prefix -g)/bin/elm-review"
+check "npm tool: elm-test"   test -x "$(npm prefix -g)/bin/elm-test"
+
+reportResults

test/elm-lang/elm__javascript-node__with_npm_tools.sh

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+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "Elm-lang compiler binary is executable" test -x /usr/local/bin/elm
+check "elm --version" elm --version
+check "npm tool: elm-format" test -x "$(npm prefix -g)/bin/elm-format"
+check "npm tool: elm-review" test -x "$(npm prefix -g)/bin/elm-review"
+check "npm tool: elm-test"   test -x "$(npm prefix -g)/bin/elm-test"
+
+reportResults

test/elm-lang/elm__ubuntu__with_npm_tools.sh

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+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "Elm-lang compiler binary is executable" test -x /usr/local/bin/elm
+check "elm --version" elm --version
+check "npm tool not installed: elm-format" test ! -e "$(npm prefix -g)/bin/elm-format"
+check "npm tool not installed: elm-review" test ! -e "$(npm prefix -g)/bin/elm-review"
+check "npm tool: elm-test" test -x "$(npm prefix -g)/bin/elm-test"
+
+reportResults

test/elm-lang/scenarios.json

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+{
+    "elm__debian__with_npm_tools": {
+        "image": "debian:trixie",
+        "features": {
+            "elm-lang": {},
+            "ghcr.io/devcontainers/features/node:1": {
+                "version": "lts",
+                "nodeGypDependencies": false
+            }
+        }
+    },
+    "elm__ubuntu__with_npm_tools": {
+        "image": "ubuntu:noble",
+        "features": {
+            "elm-lang": {
+                "installFormat": false,
+                "installReview": false,
+                "installTest": true
+            },
+            "ghcr.io/devcontainers/features/node:1": {
+                "version": "lts",
+                "nodeGypDependencies": false
+            }
+        }
+    },
+    "elm__javascript-node__with_npm_tools": {
+        "image": "mcr.microsoft.com/devcontainers/javascript-node:4-24-bookworm",
+        "remoteUser": "node",
+        "features": {
+            "elm-lang": {}
+        }
+    }
+}

test/elm-lang/test.sh

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+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+check "Elm-lang compiler binary is executable" test -x /usr/local/bin/elm
+check "elm --version" elm --version
+
+reportResults