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git/revCount: improve error message when we have incomplete git history

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This commit is contained in:
Jörg Thalheim 2025-05-25 16:27:51 +02:00
parent 0479db934c
commit b1ccfaa080
4 changed files with 80 additions and 15 deletions
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14
tests/functional/fetchGit.sh
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@ -12,7 +12,7 @@ repo=$TEST_ROOT/./git
export _NIX_FORCE_HTTP=1
rm -rf $repo ${repo}-tmp $TEST_HOME/.cache/nix $TEST_ROOT/worktree $TEST_ROOT/shallow $TEST_ROOT/minimal
rm -rf $repo ${repo}-tmp $TEST_HOME/.cache/nix $TEST_ROOT/worktree $TEST_ROOT/minimal
git init $repo
git -C $repo config user.email "foobar@example.com"
@ -216,18 +216,6 @@ git -C $TEST_ROOT/minimal fetch $repo $rev2
git -C $TEST_ROOT/minimal checkout $rev2
[[ $(nix eval --impure --raw --expr "(builtins.fetchGit { url = $TEST_ROOT/minimal; }).rev") = $rev2 ]]
# Fetching a shallow repo shouldn't work by default, because we can't
# return a revCount.
git clone --depth 1 file://$repo $TEST_ROOT/shallow
(! nix eval --impure --raw --expr "(builtins.fetchGit { url = $TEST_ROOT/shallow; ref = \"dev\"; }).outPath")
# But you can request a shallow clone, which won't return a revCount.
path6=$(nix eval --impure --raw --expr "(builtins.fetchTree { type = \"git\"; url = \"file://$TEST_ROOT/shallow\"; ref = \"dev\"; shallow = true; }).outPath")
[[ $path3 = $path6 ]]
[[ $(nix eval --impure --expr "(builtins.fetchTree { type = \"git\"; url = \"file://$TEST_ROOT/shallow\"; ref = \"dev\"; shallow = true; }).revCount or 123") == 123 ]]
expectStderr 1 nix eval --expr 'builtins.fetchTree { type = "git"; url = "file:///foo"; }' | grepQuiet "'fetchTree' will not fetch unlocked input"
# Explicit ref = "HEAD" should work, and produce the same outPath as without ref
path7=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; ref = \"HEAD\"; }).outPath")
path8=$(nix eval --impure --raw --expr "(builtins.fetchGit { url = \"file://$repo\"; }).outPath")