nixpkgs/pkgs/development/compilers/elm/packages/elm-pages-fix-read-only.patch

diff --git a/generator/src/codegen.js b/generator/src/codegen.js
index a0ef8806e..fe00ac904 100644
--- a/generator/src/codegen.js
+++ b/generator/src/codegen.js
@@ -20,33 +20,33 @@ async function generate(basePath) {
 
   const uiFileContent = elmPagesUiFile();
   await Promise.all([
-    fs.promises.copyFile(
-      path.join(__dirname, `./Page.elm`),
-      `./.elm-pages/Page.elm`
+    fs.promises.writeFile(
+      `./.elm-pages/Page.elm`,
+      fs.readFileSync(path.join(__dirname, `./Page.elm`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./elm-application.json`),
-      `./elm-stuff/elm-pages/elm-application.json`
+    fs.promises.writeFile(
+      `./elm-stuff/elm-pages/elm-application.json`,
+      fs.readFileSync(path.join(__dirname, `./elm-application.json`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./Page.elm`),
-      `./elm-stuff/elm-pages/.elm-pages/Page.elm`
+    fs.promises.writeFile(
+      `./elm-stuff/elm-pages/.elm-pages/Page.elm`,
+      fs.readFileSync(path.join(__dirname, `./Page.elm`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./SharedTemplate.elm`),
-      `./.elm-pages/SharedTemplate.elm`
+    fs.promises.writeFile(
+      `./.elm-pages/SharedTemplate.elm`,
+      fs.readFileSync(path.join(__dirname, `./SharedTemplate.elm`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./SharedTemplate.elm`),
-      `./elm-stuff/elm-pages/.elm-pages/SharedTemplate.elm`
+    fs.promises.writeFile(
+      `./elm-stuff/elm-pages/.elm-pages/SharedTemplate.elm`,
+      fs.readFileSync(path.join(__dirname, `./SharedTemplate.elm`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./SiteConfig.elm`),
-      `./.elm-pages/SiteConfig.elm`
+    fs.promises.writeFile(
+      `./.elm-pages/SiteConfig.elm`,
+      fs.readFileSync(path.join(__dirname, `./SiteConfig.elm`))
     ),
-    fs.promises.copyFile(
-      path.join(__dirname, `./SiteConfig.elm`),
-      `./elm-stuff/elm-pages/.elm-pages/SiteConfig.elm`
+    fs.promises.writeFile(
+      `./elm-stuff/elm-pages/.elm-pages/SiteConfig.elm`,
+      fs.readFileSync(path.join(__dirname, `./SiteConfig.elm`))
     ),
     fs.promises.writeFile("./.elm-pages/Pages.elm", uiFileContent),
     // write `Pages.elm` with cli interface