commit e3512d887df41a8162c3e361171c04beca08415b
Author: Tom Stejskal <tom.stejskal@gmail.com>
Date:   Mon Nov 19 20:09:43 2018 +0100

    Fix Map.!: given key is not an element in the map

diff --git a/compiler/src/Elm/Compiler/Type/Extract.hs b/compiler/src/Elm/Compiler/Type/Extract.hs
index 1aafe1d4..99763392 100644
--- a/compiler/src/Elm/Compiler/Type/Extract.hs
+++ b/compiler/src/Elm/Compiler/Type/Extract.hs
@@ -10,6 +10,7 @@ module Elm.Compiler.Type.Extract
 
 
 import Data.Map ((!))
+import qualified Data.Map as Map
 import qualified Data.Maybe as Maybe
 import qualified Data.Set as Set
 
@@ -134,11 +135,15 @@ extractUnion interfaces (Opt.Global home name) =
     else
       let
         pname = toPublicName home name
-        unions = I._unions (interfaces ! home)
+        maybeUnions = I._unions <$> Map.lookup home interfaces
       in
-      case I.toUnionInternals (unions ! name) of
-        Can.Union vars ctors _ _ ->
-          T.Union pname vars <$> traverse extractCtor ctors
+      case Map.lookup name =<< maybeUnions of
+        Just union ->
+          case I.toUnionInternals union of
+            Can.Union vars ctors _ _ ->
+              T.Union pname vars <$> traverse extractCtor ctors
+        Nothing ->
+          return $ T.Union pname [] []
 
 
 extractCtor :: Can.Ctor -> Extractor (N.Name, [T.Type])
x/commit/gnu/home/services/sway.scm?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>commit</a><a href='/guix/diff/gnu/home/services/sway.scm?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/home/services/sway.scm'>
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<div class='path'>path: <a href='/guix/log/?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>root</a>/<a href='/guix/log/gnu?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>gnu</a>/<a href='/guix/log/gnu/home?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>home</a>/<a href='/guix/log/gnu/home/services?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>services</a>/<a href='/guix/log/gnu/home/services/sway.scm?id=4d9c5984fee481d74c2f504094b4797bbb4104d4'>sway.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/home/services/sway.scm?id=4d9c5984fee481d74c2f504094b4797bbb4104d4&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-10-12 14:26:01 +0200'>2024-10-12</span></td><td><a href='/guix/commit/gnu/home/services/sway.scm?id=b64f7984a5e2aba04df72a92f0044e423efe77c6'>home: services: Add 'home-sway-service-type'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/home/services/sway.scm: New file.
(home-sway-service-type): New variable.
(sway-configuration-&gt;file): New procedure.
(sway-configuration): New configuration record.
(sway-bar): New configuration record.
(sway-output): New configuration record.
(sway-input): New configuration record.
(point): New configuration record.
(sway-color): New configuration record.
(sway-border-color): New configuration record.
(sway-mode): New configuration record.
(flatmap): New procedure.
* gnu/local.mk: Add gnu/home/services/sway.scm.
* doc/guix.texi (Sway window manager): New node to document the above
changes.

Signed-off-by: Florian Pelz &lt;pelzflorian@pelzflorian.de&gt;
Change-Id: I880261570c5afdb795f2ce18bac2b9a5c898677f
</span></span></td><td>Arnaud Daby-Seesaram</td></tr>