diff --git a/src/app/ProfileManager.php b/src/app/ProfileManager.php
new file mode 100644
index 0000000..eae9822
--- /dev/null
+++ b/src/app/ProfileManager.php
@@ -0,0 +1,50 @@
+<?php
+namespace nulib\app;
+
+/**
+ * Class ProfileManager: gestionnaire de profils
+ */
+class ProfileManager {
+  const NAME = null;
+  const PROFILES = ["prod", "test", "devel"];
+  const PRODUCTION_MODES = [
+    "prod" => true,
+    "test" => true,
+  ];
+  const PROFILE_MAP = null;
+
+  function __construct(?array $params=null) {
+    $name = $params["name"] ?? static::NAME;
+    if ($name !== null) $name .= "_";
+    $prefixes = [strtoupper($name)];
+    $app = $params["app"] ?? false;
+    if ($app) $prefixes[] = "APP_";
+    $this->envPrefixes = $prefixes;
+  }
+
+  protected array $envPrefixes;
+
+  function getEnvProfile(): ?string {
+    foreach ($this->envPrefixes as $prefix) {
+      $profile = getenv($prefix."PROFILE");
+      if ($profile !== false) return $profile;
+    }
+    return null;
+  }
+
+  protected ?string $defaultProfile = null;
+
+  function getDefaultProfile(): ?string {
+    return $this->defaultProfile;
+  }
+
+  function setDefaultProfile(?string $profile): void {
+    $this->defaultProfile = $profile;
+  }
+
+  function getProfile(?bool &$productionMode=null): string {
+  }
+
+  function setProfile(?string $profile=null, ?bool $productionMode=null): void {
+  }
+}
diff --git a/src/app/app.php b/src/app/app.php
index 9592582..1fde156 100644
--- a/src/app/app.php
+++ b/src/app/app.php
@@ -386,7 +386,7 @@ class app {
       "etcdir" => $this->etcdir,
       "vardir" => $this->vardir,
       "logdir" => $this->logdir,
-      "profile" => $this->profile,
+      "profile" => $this->le,
       "appgroup" => $this->appgroup,
       "name" => $this->name,
       "title" => $this->title,
diff --git a/src/app/config.php b/src/app/config.php
new file mode 100644
index 0000000..9713d28
--- /dev/null
+++ b/src/app/config.php
@@ -0,0 +1,8 @@
+<?php
+namespace nulib\app;
+
+/**
+ * Class config: gestion de la configuration de l'application
+ */
+class config {
+}