diff --git a/packages/build/build/build.js b/packages/build/build/build.js
index 61b3b08..a9770be 100644
--- a/packages/build/build/build.js
+++ b/packages/build/build/build.js
@@ -86,40 +86,6 @@ module.exports = class Build extends Flecks {
     await this.invokeSequentialAsync('@flecks/build.config.alter', config, env, argv);
   }
 
-  static environmentalize(path) {
-    return path
-      // - `@flecks/core` -> `flecks_core`
-      .replace(/[^a-zA-Z0-9]/g, '_')
-      .replace(/_*(.*)_*/, '$1');
-  }
-
-  static environmentConfiguration(config) {
-    const keys = Object.keys(process.env);
-    Object.keys(config)
-      .sort((l, r) => (l < r ? 1 : -1))
-      .forEach((fleck) => {
-        const prefix = `FLECKS_ENV__${this.environmentalize(fleck)}`;
-        keys
-          .filter((key) => key.startsWith(`${prefix}__`))
-          .map((key) => {
-            debug('reading environment from %s...', key);
-            return [key.slice(prefix.length + 2), process.env[key]];
-          })
-          .map(([subkey, value]) => [subkey.split('_'), value])
-          .forEach(([path, jsonOrString]) => {
-            try {
-              Flecks.set(config, [fleck, ...path], JSON.parse(jsonOrString));
-              debug('read (%s) as JSON', jsonOrString);
-            }
-            catch (error) {
-              Flecks.set(config, [fleck, ...path], jsonOrString);
-              debug('read (%s) as string', jsonOrString);
-            }
-          });
-      });
-    return config;
-  }
-
   static async from(
     {
       config: configParameter,
diff --git a/packages/core/build/flecks.js b/packages/core/build/flecks.js
index 9163e23..78a1509 100644
--- a/packages/core/build/flecks.js
+++ b/packages/core/build/flecks.js
@@ -219,6 +219,52 @@ class Flecks {
     this.flecks = {};
   }
 
+  /**
+   * Sanitize a fleck configuration path to an environment variable-friendly name.
+   *
+   * @param {string} path The path to sanitize.
+   * @returns {string}
+   */
+  static environmentalize(path) {
+    return path
+      // - `@flecks/core` -> `flecks_core`
+      .replace(/[^a-zA-Z0-9]/g, '_')
+      .replace(/_*(.*)_*/, '$1');
+  }
+
+  /**
+   * Override configuration through environment variables.
+   *
+   * @param {Object} config The configuration to override.
+   * @returns {Object}
+   */
+  static environmentConfiguration(config) {
+    const keys = Object.keys(process.env);
+    Object.keys(config)
+      .sort((l, r) => (l < r ? 1 : -1))
+      .forEach((fleck) => {
+        const prefix = `FLECKS_ENV__${this.environmentalize(fleck)}`;
+        keys
+          .filter((key) => key.startsWith(`${prefix}__`))
+          .map((key) => {
+            debug('reading environment from %s...', key);
+            return [key.slice(prefix.length + 2), process.env[key]];
+          })
+          .map(([subkey, value]) => [subkey.split('_'), value])
+          .forEach(([path, jsonOrString]) => {
+            try {
+              Flecks.set(config, [fleck, ...path], JSON.parse(jsonOrString));
+              debug('read (%s) as JSON', jsonOrString);
+            }
+            catch (error) {
+              Flecks.set(config, [fleck, ...path], jsonOrString);
+              debug('read (%s) as string', jsonOrString);
+            }
+          });
+      });
+    return config;
+  }
+
   /**
    * Lists all flecks implementing a hook, including platform-specific and elided variants.
    *
diff --git a/packages/server/build/runtime.js b/packages/server/build/runtime.js
index 4208ff1..bd123f8 100644
--- a/packages/server/build/runtime.js
+++ b/packages/server/build/runtime.js
@@ -16,11 +16,13 @@ async function runtimeModule(compilation, flecks) {
     /* eslint-disable indent */
     bootstrappedConfig: JSON.stringify(flecks.invoke('@flecks/core.config')),
     config: (`
-      dealiasedConfig(${
-        'production' === compiler.options.mode
-          ? JSON.stringify(flecks.originalConfig)
-          : `require('${ymlPath}').default`
-      })
+      Flecks.environmentConfiguration(
+        Flecks.dealiasedConfig(${
+          'production' === compiler.options.mode
+            ? JSON.stringify(flecks.originalConfig)
+            : `require('${ymlPath}').default`
+        })
+      )
     `),
     /* eslint-enable indent */
     loadFlecks: [
@@ -54,7 +56,7 @@ async function runtimeModule(compilation, flecks) {
       .map(([key, value]) => `"${key}": ${value}`).join(', ')
   }}`;
   const source = [
-    `const {dealiasedConfig} = {${flecks.constructor.dealiasedConfig.toString()}};`,
+    "const {Flecks} = require('@flecks/core');",
     "process.env.FLECKS_CORE_BUILD_TARGET = 'server';",
     `module.exports = (async () => (${runtimeString}))();`,
   ];
diff --git a/packages/server/src/entry.js b/packages/server/src/entry.js
index af48be6..b38af0b 100644
--- a/packages/server/src/entry.js
+++ b/packages/server/src/entry.js
@@ -7,7 +7,7 @@ import {D, Flecks} from '@flecks/core';
 
 (async () => {
   const runtime = await import('@flecks/server/runtime');
-  const {loadFlecks, version} = runtime;
+  const {config, loadFlecks, version} = runtime;
   // eslint-disable-next-line no-console
   console.log(`flecks server v${version}`);
   try {
@@ -20,7 +20,11 @@ import {D, Flecks} from '@flecks/core';
   }
   const debug = D('@flecks/server/entry');
   debug('starting server...');
-  global.flecks = await Flecks.from({...runtime, flecks: await loadFlecks()});
+  global.flecks = await Flecks.from({
+    ...runtime,
+    config: Flecks.environmentConfiguration(config),
+    flecks: await loadFlecks(),
+  });
   await global.flecks.invokeSequentialAsync('@flecks/server.up');
   debug('up!');
 })();