From 5d2a7238df8c9658e92e816b715fa1c10f71603f Mon Sep 17 00:00:00 2001
From: Benjamin <BenSchZA@users.noreply.github.com>
Date: Fri, 31 Jan 2020 16:30:02 +0200
Subject: [PATCH] nixos/jupyter: Fix documentation example for
 `jupyter.kernels` (#56415)

* Fix documentation example for `jupyter.kernels`

The environment variable loading fails when using the example for `kernels` config, due to incorrect syntax. The error being something along the lines of `path not found`.

Thanks to @Infinisil and @layus for suggestions.
---
 nixos/modules/services/development/jupyter/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/nixos/modules/services/development/jupyter/default.nix b/nixos/modules/services/development/jupyter/default.nix
index f20860af6e1..e598b018645 100644
--- a/nixos/modules/services/development/jupyter/default.nix
+++ b/nixos/modules/services/development/jupyter/default.nix
@@ -118,15 +118,15 @@ in {
           in {
             displayName = "Python 3 for machine learning";
             argv = [
-              "$ {env.interpreter}"
+              "''${env.interpreter}"
               "-m"
               "ipykernel_launcher"
               "-f"
               "{connection_file}"
             ];
             language = "python";
-            logo32 = "$ {env.sitePackages}/ipykernel/resources/logo-32x32.png";
-            logo64 = "$ {env.sitePackages}/ipykernel/resources/logo-64x64.png";
+            logo32 = "''${env.sitePackages}/ipykernel/resources/logo-32x32.png";
+            logo64 = "''${env.sitePackages}/ipykernel/resources/logo-64x64.png";
           };
         }
       '';