lix-project/flake-compat
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Allow use on repos without commits #14

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jtojnar wants to merge 1 commit from jtojnar/fresh-repos into master
pull from: jtojnar/fresh-repos
merge into: lix-project:master
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1 changed files with 3 additions and 1 deletions
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default.nix
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@ -77,12 +77,14 @@ let
# Try to clean the source tree by using fetchGit, if this source # Try to clean the source tree by using fetchGit, if this source
# tree is a valid git repository. # tree is a valid git repository.
tryFetchGit = src: tryFetchGit = src:
if isGit && !isShallow if isGit && !isShallow && hasBranch
then builtins.fetchGit src then builtins.fetchGit src
else { outPath = src; }; else { outPath = src; };
# NB git worktrees have a file for .git, so we don't check the type of .git # NB git worktrees have a file for .git, so we don't check the type of .git
isGit = builtins.pathExists (src + "/.git"); isGit = builtins.pathExists (src + "/.git");
isShallow = builtins.pathExists (src + "/.git/shallow"); isShallow = builtins.pathExists (src + "/.git/shallow");
# Repos without commits do not have any heads.
hasBranch = builtins.pathExists (src + "/.git/refs/heads") && builtins.readDir (src + "/.git/refs/heads") != { };
in in
(if src ? outPath then src else tryFetchGit src) (if src ? outPath then src else tryFetchGit src)