Use getEnv to evaulate any file

.gitignore

@@ -0,0 +1,9 @@
+*
+
+!site/
+
+!.gitignore
+!flake.lock
+
+!*.nix
+!*.sh

build.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+set -e # Fail fast.
+
+rm -rf _site
+
+# Creates all dirs needed.
+for dir in $(find site -type d); do
+  mkdir -p "_$dir"
+done
+
+if [[ "$HTMNIX_LOCAL" == 1 ]]; then
+  FLAKE_REF=.
+else
+  FLAKE_REF=github:RGBCube/HTMNIX
+fi
+
+for file in $(find site -type f); do
+  if [[ ! "$file" =~ ^_ ]]; then
+    if [[ "$file" =~ .nix$ ]]; then
+      echo "Processing file $file to _${file%.nix}.html..."
+      TARGET_FILE="$file" nix eval "$FLAKE_REF#result" --apply toString --raw > "_${file%.nix}.html"
+      echo "Done!"
+    else
+      echo "Copying file $file to _$file..."
+      cp "$file" "_$file"
+      echo "Done!"
+    fi
+  fi
+done
+
+echo "All done!"

flake.nix

@@ -74,6 +74,9 @@
         };
     };
 
-    result = builtins.scopedImport { inherit (self) raw __findFile; } ./html.nix;
+    result = let
+      targetFile = builtins.getEnv "TARGET_FILE";
+      targetFile' = if targetFile != "" then targetFile else "site/index.nix";
+    in builtins.scopedImport { inherit (self) raw __findFile; } ./${targetFile'};
   };
 }