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-rw-r--r--doc/manual/command-ref/nix-shell.xml14
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/manual/command-ref/nix-shell.xml b/doc/manual/command-ref/nix-shell.xml
index 3f12dda040ad..cb443c888d3d 100644
--- a/doc/manual/command-ref/nix-shell.xml
+++ b/doc/manual/command-ref/nix-shell.xml
@@ -317,6 +317,20 @@ while (my $token = $p->get_tag("a")) {
 
 </para>
 
+<para>Sometimes you need to pass a simple Nix expression to customize
+a package like Terraform:
+
+<programlisting><![CDATA[
+#! /usr/bin/env nix-shell
+#! nix-shell -i bash -p "terraform.withPlugins (plugins: [ plugins.openstack ])"
+
+terraform apply
+]]></programlisting>
+
+<note><para>You must use double quotes (<literal>"</literal>) when
+passing a simple Nix expression in a nix-shell shebang.</para></note>
+</para>
+
 <para>Finally, using the merging of multiple nix-shell shebangs the
 following Haskell script uses a specific branch of Nixpkgs/NixOS (the
 18.03 stable branch):