Update dev build config to use Composer 2 and PHP 7.4

.platform.app.yaml

@@ -1,6 +1,9 @@
 name: app
-type: php:7.3
-disk: 128
+type: php:7.4
+
+dependencies:
+  php:
+    composer/composer: "^2"
 
 hooks:
   build: |
@@ -9,7 +12,13 @@ hooks:
 
     export version=dev-"$PLATFORM_TREE_ID"
 
-    composer bin all install
+    composer install -a --no-dev --no-interaction
+
+    composer install -d vendor-bin/box --no-interaction
+
+    mkdir -p vendor/bin
+    ln -s "$(realpath vendor-bin/box/vendor/bin/box)" vendor/bin/box
+
     ./bin/platform self:build --no-composer-rebuild --yes --replace-version "$version" --output web/platform.phar
 
     cat << EOF > .environment

Dockerfile

@@ -1,4 +1,4 @@
-FROM  php:7.3-cli
+FROM  php:7.4-cli
 
 ARG USER_ID
 ARG GROUP_ID

composer.json

@@ -43,8 +43,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^4.3 !=4.8.0",
-        "drush/drush": "^8.0",
-        "bamarni/composer-bin-plugin": "^1.2"
+        "drush/drush": "^8.0"
     },
     "authors": [
         {
@@ -60,9 +59,6 @@
     "config": {
         "platform": {
             "php": "5.5.9"
-        },
-        "allow-plugins": {
-            "bamarni/composer-bin-plugin": true
         }
     },
     "scripts": {

scripts/test/build-and-install.sh

@@ -9,7 +9,7 @@ if [ ! -d vendor ]; then
   composer install
 fi
 if [ ! -d vendor-bin/box/vendor ]; then
-  composer bin all install
+  composer -d vendor-bin/box install
 fi
 
 function cleanup {

src/Command/Self/SelfBuildCommand.php

@@ -99,28 +99,25 @@ protected function execute(InputInterface $input, OutputInterface $output)
             // Wipe the vendor directory to be extra sure.
             $shell->execute(['rm', '-rf', 'vendor'], CLI_ROOT, false);
 
-            // We cannot use --no-dev, as that would exclude the
-            // composer-bin-plugin tool.
             $shell->execute([
                 'composer',
                 'install',
                 '--classmap-authoritative',
                 '--no-interaction',
                 '--no-progress',
+                '--no-dev',
             ], CLI_ROOT, true, false);
 
-            // Install composer-bin-plugin dependencies.
+            // Install Box.
             $shell->execute([
                 'composer',
-                'bin',
-                'all',
                 'install',
                 '--no-interaction',
                 '--no-progress',
-            ], CLI_ROOT, true, false);
+            ], CLI_ROOT . DIRECTORY_SEPARATOR . 'vendor-bin' . DIRECTORY_SEPARATOR . 'box', true, false);
         }
 
-        $boxArgs = [CLI_ROOT . '/vendor/bin/box', 'compile', '--no-interaction'];
+        $boxArgs = [CLI_ROOT . '/vendor-bin/box/vendor/bin/box', 'compile', '--no-interaction'];
         if ($output->isVeryVerbose()) {
             $boxArgs[] = '-vvv';
         } elseif ($output->isVerbose()) {