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StorePath: reject names starting with '.'

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This has been the behaviour before Nix 2.4. It was dropped in a rewrite
in 759947bf72, allowing the creation of
store paths that aren't considered valid by older Nix versions or other
Nix tooling.

Nix 2.4 didn't ship in NixOS until 22.05, and stdenv.mkDerivation in
nixpkgs drops leading periods since April 2022, so it's unlikely anyone
is relying on the current lax behaviour.

Closes #9091.

Change-Id: I4a57bd9899e1b0dba56870ae5a1b680918a18ce9
(cherry picked from commit 24bda0c7b3)
This commit is contained in:
edef 2023-10-04 16:50:24 +00:00 • committed by github-actions[bot]
parent 15a3e6e282
commit 10b38a55cf
3 changed files with 10 additions and 3 deletions
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2
src/libstore/path-regex.hh
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@ -3,6 +3,6 @@
namespace nix {
static constexpr std::string_view nameRegexStr = R"([0-9a-zA-Z\+\-\._\?=]+)";
static constexpr std::string_view nameRegexStr = R"([0-9a-zA-Z\+\-_\?=][0-9a-zA-Z\+\-\._\?=]*)";
}