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])
ts/import-github.scm?id=3e968af4726192b042837c449e55b91fae14fa17'>commit</a><a href='/guix/diff/tests/import-github.scm?id=3e968af4726192b042837c449e55b91fae14fa17'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/import-github.scm'>
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<div class='path'>path: <a href='/guix/log/?id=3e968af4726192b042837c449e55b91fae14fa17'>root</a>/<a href='/guix/log/tests?id=3e968af4726192b042837c449e55b91fae14fa17'>tests</a>/<a href='/guix/log/tests/import-github.scm?id=3e968af4726192b042837c449e55b91fae14fa17'>import-github.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/tests/import-github.scm?id=3e968af4726192b042837c449e55b91fae14fa17&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-12-26 17:15:06 +0100'>2022-12-26</span></td><td><a href='/guix/commit/tests/import-github.scm?id=a274a6a1acb99738f02de7b226e6a0d3883ec353'>upstream-updater: Rename record field.</a><span class='msg-avail'>...<span class='msg-tooltip'>The next commits will make the functions, which are currently importing the
latest version of a package, change into importing the latest or a given
version of the package (for those updaters supporting specifying a version).
Thus the name ‘latest‘ is no longer appropriate.

* guix/upstream.scm (upstream-updater) Rename field [latest] to
  [import]. (lookup-updater, package-latest-release) Adjust fieldname
  accordingly.
* guix/gnu-maintenance.scm (%gnu-updater, %gnu-ftp-updater,
  %savannah-updater, %sourceforge-updater, %xorg-updater,
  %kernel.org-updater, %generic-html-updater),
  guix/import/cpan.scm (%cpan-updater),
  guix/import/cran.scm (%cran-updater, %bioconductor-updater),
  guix/import/crate.scm (%crate-updater),
  guix/import/egg.scm (%egg-updater),
  guix/import/elpa.scm (%elpa-updater),
  guix/import/gem.scm (%gem-updater),
  guix/import/git.scm (%generic-git-updater),
  guix/import/github.scm (%github-updater),
  guix/import/gnome.scm (%gnome-updater),
  guix/import/hackage.scm (%hackage-updater),
  guix/import/hexpm.scm (%hexpm-updater),
  guix/import/kde.scm (%kde-updater),
  guix/import/launchpad.scm (%launchpad-updater),
  guix/import/minetest.scm (%minetest-updater),
  guix/import/opam.scm (%opam-updater),
  guix/import/pypi.scm (%pypi-updater),
  guix/import/stackage.scm (%stackage-updater),
  tests/import-github.scm (found-sexp)
  tests/transformations.scm ("options-&gt;transformation, with-latest"):
  Adjust fieldname accordingly.
</span></span></td><td>Hartmut Goebel</td></tr>
<tr><td><span title='2022-03-07 22:49:27 +0100'>2022-03-07</span></td><td><a href='/guix/commit/tests/import-github.scm?id=667f21aea000b988f2587f9039be25e61a2cbb08'>tests: Adjust to (guix import github) changes.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to a8d3033da61958c53c44dd5db90672bfc4533ef9.

* tests/import-github.scm (call-with-releases): Mock
'open-connection-for-uri'.
</span></span></td><td>Ludovic Courtès</td></tr>