Update nix config

preproduction.sh

@@ -1,4 +0,0 @@
-python parser/md.py
-python generate.py
-cd dist
-python -m http.server 8000

requirements.txt

@@ -1,4 +1,4 @@
-markdown>=3.8.0
-python-markdown-math>=0.9
-pyyaml>=6.0.2
-jinja2>=3.1.6
+markdown==3.8.0
+python-markdown-math==0.9
+pyyaml==6.0.2
+jinja2==3.1.6

shell.nix

@@ -8,10 +8,18 @@ pkgs.mkShell {
   ];
 
   shellHook = ''
-    if [ ! -d .venv ]; then
-      python -m venv .venv
+    export PIP_REQUIRE_VIRTUALENV=1
+    export VENV_PATH=$HOME/venv/homepage
+    
+    if [ ! -d $VENV_PATH ]; then
+      python -m venv $VENV_PATH
     fi
-    source .venv/bin/activate
+    source $VENV_PATH/bin/activate
     pip install -r requirements.txt
+
+    python parser/md.py
+    python generate.py
+    cd dist
+    python -m http.server 8000
   '';
 }