diff --git a/api/src/job.js b/api/src/job.js
index d46120b..8c3fa79 100644
--- a/api/src/job.js
+++ b/api/src/job.js
@@ -156,7 +156,11 @@ class Job {
                 '-s',
                 '-c',
                 '/box/submission',
-                '-e',
+                '-E',
+                'HOME=/tmp',
+                ...this.runtime.env_vars.flat_map(v => ['-E', v]),
+                '-E',
+                `PISTON_LANGUAGE=${this.runtime.language}`,
                 `--dir=${this.runtime.pkgdir}`,
                 `--dir=/etc:noexec`,
                 `--processes=${this.runtime.max_process_count}`,
@@ -175,10 +179,6 @@ class Job {
                 ...args,
             ],
             {
-                env: {
-                    ...this.runtime.env_vars,
-                    PISTON_LANGUAGE: this.runtime.language,
-                },
                 stdio: 'pipe',
             }
         );
diff --git a/api/src/runtime.js b/api/src/runtime.js
index 9a2adf4..90a2225 100644
--- a/api/src/runtime.js
+++ b/api/src/runtime.js
@@ -178,15 +178,7 @@ class Runtime {
             const env_file = path.join(this.pkgdir, '.env');
             const env_content = fss.read_file_sync(env_file).toString();
 
-            this._env_vars = {};
-
-            env_content
-                .trim()
-                .split('\n')
-                .map(line => line.split('=', 2))
-                .forEach(([key, val]) => {
-                    this._env_vars[key.trim()] = val.trim();
-                });
+            this._env_vars = env_content.trim().split('\n');
         }
 
         return this._env_vars;
diff --git a/packages/ngnk/1.0.0/build.sh b/packages/k/1.0.0/build.sh
old mode 100755
new mode 100644
similarity index 53%
rename from packages/ngnk/1.0.0/build.sh
rename to packages/k/1.0.0/build.sh
index b437840..567cc06
--- a/packages/ngnk/1.0.0/build.sh
+++ b/packages/k/1.0.0/build.sh
@@ -5,5 +5,5 @@ set -e
 git clone "https://codeberg.org/ngn/k" k
 cd k
 
-git checkout 040f73b56f379a8298cb1747075c9e947dfe0e42
-make CC=gcc
\ No newline at end of file
+git checkout 544d014afd8dd84b18c2011cabd3aa3d76571ca3
+make CC=gcc
diff --git a/packages/ngnk/1.0.0/environment b/packages/k/1.0.0/environment
similarity index 61%
rename from packages/ngnk/1.0.0/environment
rename to packages/k/1.0.0/environment
index 2ad3aad..7cde4ae 100644
--- a/packages/ngnk/1.0.0/environment
+++ b/packages/k/1.0.0/environment
@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
 
+# k path
 export PATH=$PWD/bin:$PATH
-export K_PATH=$PWD/k
\ No newline at end of file
+export K_PATH=$PWD/k
diff --git a/packages/k/1.0.0/metadata.json b/packages/k/1.0.0/metadata.json
new file mode 100644
index 0000000..3a557f6
--- /dev/null
+++ b/packages/k/1.0.0/metadata.json
@@ -0,0 +1,5 @@
+{
+    "language": "k",
+    "version": "1.0.0",
+    "aliases": ["ngnk"]
+}
diff --git a/packages/ngnk/1.0.0/run b/packages/k/1.0.0/run
similarity index 58%
rename from packages/ngnk/1.0.0/run
rename to packages/k/1.0.0/run
index 5309fc9..18293ae 100644
--- a/packages/ngnk/1.0.0/run
+++ b/packages/k/1.0.0/run
@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-$K_PATH/k "$@"
\ No newline at end of file
+$K_PATH/k "$@"
diff --git a/packages/k/1.0.0/test.k b/packages/k/1.0.0/test.k
new file mode 100644
index 0000000..16fddca
--- /dev/null
+++ b/packages/k/1.0.0/test.k
@@ -0,0 +1 @@
+`0:`c$2/'((1 0 0 1 1 1 1);(1 0 0 1 0 1 1))
diff --git a/packages/ngnk/1.0.0/metadata.json b/packages/ngnk/1.0.0/metadata.json
deleted file mode 100644
index 9b467f1..0000000
--- a/packages/ngnk/1.0.0/metadata.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-    "language": "ngnk",
-    "version": "1.0.0",
-    "aliases": ["k"]
-}
\ No newline at end of file
diff --git a/packages/ngnk/1.0.0/test.k b/packages/ngnk/1.0.0/test.k
deleted file mode 100644
index 18627b8..0000000
--- a/packages/ngnk/1.0.0/test.k
+++ /dev/null
@@ -1 +0,0 @@
-`0:"OK"