diff --git a/nixos/modules/services/development/jupyter/default.nix b/nixos/modules/services/development/jupyter/default.nix
index 4eacc4782a9a..7c86e8b64785 100644
--- a/nixos/modules/services/development/jupyter/default.nix
+++ b/nixos/modules/services/development/jupyter/default.nix
@@ -143,6 +143,9 @@ in {
             language = "python";
             logo32 = "''${env.sitePackages}/ipykernel/resources/logo-32x32.png";
             logo64 = "''${env.sitePackages}/ipykernel/resources/logo-64x64.png";
+            extraPaths = {
+              "cool.txt" = pkgs.writeText "cool" "cool content";
+            };
           };
         }
       '';
diff --git a/nixos/modules/services/development/jupyter/kernel-options.nix b/nixos/modules/services/development/jupyter/kernel-options.nix
index 348a8b44b382..0a9eaafa3185 100644
--- a/nixos/modules/services/development/jupyter/kernel-options.nix
+++ b/nixos/modules/services/development/jupyter/kernel-options.nix
@@ -56,5 +56,14 @@ with lib;
         Path to 64x64 logo png.
       '';
     };
+
+    extraPaths = mkOption {
+      type = types.attrsOf types.path;
+      default = { };
+      example = literalExpression ''"{ examples = ''${env.sitePack}/IRkernel/kernelspec/kernel.js"; }'';
+      description = ''
+        Extra paths to link in kernel directory
+      '';
+    };
   };
 }
diff --git a/pkgs/applications/editors/jupyter/kernel.nix b/pkgs/applications/editors/jupyter/kernel.nix
index fba884f5a2fd..0fd59ca391e9 100644
--- a/pkgs/applications/editors/jupyter/kernel.nix
+++ b/pkgs/applications/editors/jupyter/kernel.nix
@@ -39,26 +39,22 @@ in
 
       ${concatStringsSep "\n" (mapAttrsToList (kernelName: unfilteredKernel:
         let
-          allowedKernelKeys = ["argv" "displayName" "language" "interruptMode" "env" "metadata" "logo32" "logo64"];
+          allowedKernelKeys = ["argv" "displayName" "language" "interruptMode" "env" "metadata" "logo32" "logo64" "extraPaths"];
           kernel = filterAttrs (n: v: (any (x: x == n) allowedKernelKeys)) unfilteredKernel;
           config = builtins.toJSON (
             kernel
             // {display_name = if (kernel.displayName != "") then kernel.displayName else kernelName;}
             // (optionalAttrs (kernel ? interruptMode) { interrupt_mode = kernel.interruptMode; })
           );
-          logo32 =
-            if (kernel.logo32 != null)
-            then "ln -s ${kernel.logo32} 'kernels/${kernelName}/logo-32x32.png';"
-            else "";
-          logo64 =
-            if (kernel.logo64 != null)
-            then "ln -s ${kernel.logo64} 'kernels/${kernelName}/logo-64x64.png';"
-            else "";
+          extraPaths = kernel.extraPaths or {}
+            // lib.optionalAttrs (kernel.logo32 != null) { "logo-32x32.png" = kernel.logo32; }
+            // lib.optionalAttrs (kernel.logo64 != null) { "logo-64x64.png" = kernel.logo64; }
+          ;
+          linkExtraPaths = lib.mapAttrsToList (name: value: "ln -s ${value} 'kernels/${kernelName}/${name}';") extraPaths;
         in ''
           mkdir 'kernels/${kernelName}';
           echo '${config}' > 'kernels/${kernelName}/kernel.json';
-          ${logo32}
-          ${logo64}
+          ${lib.concatStringsSep "\n" linkExtraPaths}
         '') definitions)}
 
       mkdir $out
diff --git a/pkgs/applications/science/math/sage/default.nix b/pkgs/applications/science/math/sage/default.nix
index f399099d4dac..abf07ef7fd46 100644
--- a/pkgs/applications/science/math/sage/default.nix
+++ b/pkgs/applications/science/math/sage/default.nix
@@ -9,7 +9,7 @@
 # is always preferred, see `sage-src.nix` for that.
 
 let
-  inherit (pkgs) symlinkJoin callPackage nodePackages;
+  inherit (pkgs) symlinkJoin callPackage nodePackages lib;
 
   python3 = pkgs.python3.override {
     packageOverrides = self: super: {
@@ -46,7 +46,7 @@ let
     # just one 16x16 logo is available
     logo32 = "${sage-src}/src/doc/common/themes/sage/static/sageicon.png";
     logo64 = "${sage-src}/src/doc/common/themes/sage/static/sageicon.png";
-  };
+  } // lib.optionalAttrs withDoc { extraPaths = { "doc" = "${sagedoc}/share/doc/sage/html/en"; }; };
 
   jupyter-kernel-specs = pkgs.jupyter-kernel.create {
     definitions = pkgs.jupyter-kernel.default // {