diff --git a/.gitignore b/.gitignore
index e8e28dd..9940c37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.direnv
 ssg/dist-newstyle
 src/_cache
 src/_site
diff --git a/src/ServicesTable.elm b/src/ServicesTable.elm
index 8dc2906..bd884a7 100644
--- a/src/ServicesTable.elm
+++ b/src/ServicesTable.elm
@@ -4,12 +4,14 @@ module ServicesTable exposing (main)
 import List
 import String exposing (fromInt)
 import Browser
-import Html exposing (Html, div, span, text, table, thead, tbody, tr, th, td)
-import Html.Attributes exposing (class)
+import Html exposing (Html, div, span, text, a, table, thead, tbody, tr, th, td)
+import Html.Attributes exposing (class, href)
 import Http
 import Dict exposing (Dict)
 import Json.Decode exposing (Decoder, map, map3, field, list, string, dict, keyValuePairs)
 
+pinnedCommit = "2a5f9fcde65629554f39d683db02a98a6c054756"
+
 type alias ServiceInfo =
   { fields : List String
   , tests : List String
@@ -98,9 +100,12 @@ renderTable info = table [ class "services-table", class "table-header-rotated"
   [ thead [ class "info-thead" ] [ headers ]
   , tbody [] (List.indexedMap renderLine info) ]
 
+mkSourceLink : String -> Html Msg
+mkSourceLink mod = a [ href <| "https://github.com/NixOS/nixpkgs/blob/" ++ pinnedCommit ++ String.dropLeft 7 mod ] [ text mod ]
+
 renderLine : Int -> { name : String, fields : List String, tests : List String, mod : String } -> Html Msg
 renderLine i {name, fields, tests, mod} = tr []
-  <| [ th [] [ text mod ], th [] [ text <| fromInt i ], th [] [ text name ] ]
+  <| [ th [] [ mkSourceLink mod ], th [] [ text <| fromInt i ], th [] [ text name ] ]
   ++ (List.map (\b -> td [class (if b then "cell-good" else "cell-bad")] [text (if b then "✓" else "✗")])
     <| List.map (\field -> not <| List.member field fields) watchedFields)