From e3b2cfa523cf588edf83459b23d62af8b3f1c845 Mon Sep 17 00:00:00 2001
From: qbisi <qbisicwate@gmail.com>
Date: Tue, 18 Mar 2025 19:20:29 +0800
Subject: [PATCH] petsc: patch shebang in template string of
 example_template.py

This patch does not fix the shebang at the begining of the example_template.py file.
It only replaces the shebang in the template string of that file.
---
 pkgs/by-name/pe/petsc/package.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/by-name/pe/petsc/package.nix b/pkgs/by-name/pe/petsc/package.nix
index cb9470b47428..8e0abca000e2 100644
--- a/pkgs/by-name/pe/petsc/package.nix
+++ b/pkgs/by-name/pe/petsc/package.nix
@@ -11,6 +11,7 @@
   zlib, # propagated by p4est but required by petsc
   mpi, # generic mpi dependency
   mpiCheckPhaseHook,
+  bash,
 
   # Build options
   petsc-optimized ? true,
@@ -99,6 +100,9 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     patchShebangs ./lib/petsc/bin
+
+    substituteInPlace config/example_template.py \
+      --replace-fail "/usr/bin/env bash" "${bash}/bin/bash"
   '';
 
   configureFlags =