rustup plugin

rustup/plugin.yml

@@ -0,0 +1,11 @@
+name: rustup
+when: family == "unix"
+
+provision:
+  when: declaration == "rustup"
+
+executable: rustup.sh
+
+schema:
+  $schema: https://json-schema.org/draft/2020-12/schema
+  type: "null"

rustup/rustup.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+
+# NOTE: DOES NOT APPLY TO FUNCTIONS CALLED INSIDE IF CONDITIONS OR WITH ||/&& CHAINS
+set -e
+
+eval "$(nk plugin helper bash 2>/dev/null)"
+
+rustup::provision_rustup() {
+    if ! type 'rustup' >/dev/null 2>&1; then
+        action='install'
+
+        # download init script
+        declare rustup_init_script
+        rustup_init_script="$(curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs)" \
+            || return "$(nk::error "$?" 'failed downloading rustup installer')"
+
+        # install rustup
+        sh -s - -y --no-modify-path <<< "$rustup_init_script" \
+            || return "$(nk::error "$?" 'failed installing rustup cli')"
+        changed='true'
+    else
+        action='update'
+
+        declare rustup_check_output
+        rustup_check_output="$(rustup check)" \
+            || return "$(nk::error "$?" 'failed checking for updates')"
+
+        if [[ "$rustup_check_output" == *'Update available'* ]]; then
+            rustup update \
+                || return "$(nk::error "$?" 'failed updating')"
+            changed='true'
+        fi
+    fi
+}
+
+rustup::provision() {
+    # install rustup
+    declare action='install'
+    declare status='success'
+    declare changed='false'
+    declare output=''
+    if ! nk::run_for_output output rustup::provision_rustup; then
+        status='failed'
+    fi
+    nk::log_result \
+        "$status" \
+        "$changed" \
+        "${action} rustup" \
+        "$output"
+}
+
+case "$1" in
+    provision)
+        rustup::provision "${@:2}"
+        ;;
+    *)
+        echo "rustup: unrecognized subcommand ${1}" 1>&2
+        exit 1
+        ;;
+esac