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Correctly hijack the file:// uri scheme with _NIX_FORCE_HTTP

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Setting the `_NIX_FORCE_HTTP` environment variable is supposed to force `file://` store urls to use the `HttpBinaryCacheStore` implementation rather than the `LocalBinaryCacheStore` one (very useful for testing).
However because of a name mismatch, the `LocalBinaryCacheStore` was still registering the `file` scheme when this variable was set, meaning that the actual store implementation picked up on `file://` uris was dependent on the registration order of the stores (itself dependent on the link order of the object files).

Fix this by making the `LocalBinaryCacheStore` gracefully not register the `file` uri scheme when the variable is set.
This commit is contained in:
regnat 2021-12-22 11:31:14 +01:00 committed by pennae
parent 2799fe4cdb
commit 417aaf4ff7
1 changed files with 1 additions and 1 deletions
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2
src/libstore/local-binary-cache-store.cc
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@ -107,7 +107,7 @@ bool LocalBinaryCacheStore::fileExists(const std::string & path)
std::set<std::string> LocalBinaryCacheStore::uriSchemes() std::set<std::string> LocalBinaryCacheStore::uriSchemes()
{ {
if (getEnv("_NIX_FORCE_HTTP_BINARY_CACHE_STORE") == "1") if (getEnv("_NIX_FORCE_HTTP") == "1")
return {}; return {};
else else
return {"file"}; return {"file"};