From 4f3959790301dea00a3a84086c2875051c63b5e1 Mon Sep 17 00:00:00 2001
From: Simon Chatterjee <code@chatts.net>
Date: Tue, 18 Feb 2020 11:08:00 +0000
Subject: [PATCH] spago: fix Darwin build

This change gets round a weird permissions error on darwin
---
 pkgs/development/haskell-modules/configuration-nix.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index c1b1c22d554..813ab160a2c 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -680,6 +680,11 @@ self: super: builtins.intersectAttrs super {
           # https://github.com/spacchetti/spago/issues/510
           cp ${docsSearchAppJsFile} "$sourceRoot/templates/docs-search-app.js"
           cp ${purescriptDocsSearchFile} "$sourceRoot/templates/purescript-docs-search"
+
+          # For some weird reason, on Darwin, the open(2) call to embed these files
+          # requires write permissions. The easiest resolution is just to permit that
+          # (doesn't cause any harm on other systems).
+          chmod u+w "$sourceRoot/templates/docs-search-app.js" "$sourceRoot/templates/purescript-docs-search"
         '';
       });