Don't error if package index is missing (fix #10504)

All of the packages Cabal needs may already be present in the local package database; we don't know yet! This is a partial revert of #8944. See: #8944 (comment)
haskell · Nov 9, 2024 · d58a75e · d58a75e
1 parent c1ddadb
commit d58a75e
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diff --git a/cabal-install/src/Distribution/Client/IndexUtils.hs b/cabal-install/src/Distribution/Client/IndexUtils.hs
@@ -457,8 +457,8 @@ readRepoIndex verbosity repoCtxt repo idxState =
       if isDoesNotExistError e
         then do
           case repo of
-            RepoRemote{..} -> dieWithException verbosity $ MissingPackageList repoRemote
-            RepoSecure{..} -> dieWithException verbosity $ MissingPackageList repoRemote
+            RepoRemote{..} -> warn verbosity $ exceptionMessageCabalInstall $ MissingPackageList repoRemote
+            RepoSecure{..} -> warn verbosity $ exceptionMessageCabalInstall $ MissingPackageList repoRemote
             RepoLocalNoIndex local _ ->
               warn verbosity $
                 "Error during construction of local+noindex "

diff --git a/cabal-testsuite/PackageTests/Get/T7248/cabal.out b/cabal-testsuite/PackageTests/Get/T7248/cabal.out
@@ -1,4 +1,6 @@
 # cabal get
 Warning: <ROOT>/cabal.config: Unrecognized stanza on line 3
-Error: [Cabal-7160]
-The package list for 'repo.invalid' does not exist. Run 'cabal update' to download it.
+Warning: The package list for 'repo.invalid' does not exist. Run 'cabal update' to download it.
+Error: [Cabal-7100]
+There is no package named 'a-b-s-e-n-t'. 
+You may need to run 'cabal update' to get the latest list of available packages.