Use more portable shebangs with /usr/bin/env bash (eth-cscs#292)

Author: msimberg

docs/recipes.md

@@ -566,7 +566,7 @@ The post-install script is templated using Jinja, with the following variables a
 The use of Jinja templates is demonstrated in the following example of a bash script that generates an activation script that adds the installation path of GROMACS to the system PATH:
 
 ```bash title="post-install script that generates a simple activation script."
-#!/bin/bash
+#!/usr/bin/env bash
 
 gmx_path=$(spack -C {{ env.config }} location -i gromacs)/bin
 echo "export PATH=$gmx_path:$PATH" >> {{ env.mount }}/activate.sh

stackinator/etc/bwrap-mutable-root.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 args=()
 shopt -s dotglob
 for d in /*; do

stackinator/etc/envvars.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import argparse
 import json

unittests/data/arbor-uenv/meta/configure.json

@@ -25,7 +25,7 @@
       "-c",
       "./cache.yaml"
     ],
-    "python": "/usr/bin/python3",
+    "python": "/usr/bin/env python3",
     "version": "4.1.0-dev"
   },
   "time": "20240611 12:06:38"

unittests/recipes/host-recipe/post-install

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 echo "====================================="
 echo "=====     post install hook     ====="

unittests/recipes/host-recipe/pre-install

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 echo "====================================="
 echo "=====      pre install hook     ====="

unittests/test-envvars.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 root=$(pwd)
 input_path=${root}/data/arbor-uenv

unittests/test_schema.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python3
+#!/usr/bin/env python3
 
 import pathlib
 from textwrap import dedent