change shebangs of all .sh scripts to bash

On operating systems where /bin/sh is not Bash, some scripts are invalid
because of bashisms, and building Lix fails with errors like this:
`render-manpage.sh: 3: set: Illegal option -o pipefail`
This modifies all scripts that use a `/bin/sh` shebang to `/usr/bin/env
bash`, including currently POSIX-compliant ones, to prevent any future
confusion.

Change-Id: Ia074cc6db42d40fc59a63726f6194ea0149ea5e0

4 files changed, 4 insertions, 4 deletions

diff --git a/tests/functional/install-darwin.sh b/tests/functional/install-darwin.sh
index ea2b75323..c785437f4 100755
--- a/tests/functional/install-darwin.sh
+++ b/tests/functional/install-darwin.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 set -eux
 
diff --git a/tests/functional/nix-daemon-untrusting.sh b/tests/functional/nix-daemon-untrusting.sh
index bcdb70989..22f0d45ae 100755
--- a/tests/functional/nix-daemon-untrusting.sh
+++ b/tests/functional/nix-daemon-untrusting.sh
@@ -1,3 +1,3 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 exec nix-daemon --force-untrusted "$@"
diff --git a/tests/functional/push-to-store-old.sh b/tests/functional/push-to-store-old.sh
index 4187958b2..21f55b70e 100755
--- a/tests/functional/push-to-store-old.sh
+++ b/tests/functional/push-to-store-old.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 set -x
 set -e
diff --git a/tests/functional/push-to-store.sh b/tests/functional/push-to-store.sh
index 9e4e475e0..fe551179e 100755
--- a/tests/functional/push-to-store.sh
+++ b/tests/functional/push-to-store.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 set -x
 set -e