forked from lix-project/lix
Qyriad
6881476232
nix::fetchers::CacheImpl uses $XDG_CACHE_HOME, or its default based on
$HOME, to store its SQLite database. If the current process can't write
to that directory for whatever reason, though, any eval-time fetching
would fail just initializing the cache.
With this change, IO errors initializing the fetcher cache are logged
but ignored, and nix::fetchers::CacheImpl falls back to an in-memory¹
database instead.
Notably, this will fix any uses eval fetching while Lix itself is being
run in a derivation builder (such as during tests), as the derivation
builder does not set $XDG_CACHE_HOME, and sets $HOME to the non-existent
directory /homeless-shelter.
Before:
$ env -u XDG_CACHE_HOME HOME=/homeless-shelter nix -Lv eval --impure -E 'fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"'
error:
… while calling the 'fetchTarball' builtin
at «string»:1:1:
1| fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"
| ^
error: creating directory '/homeless-shelter': Permission denied
After:
$ env -u XDG_CACHE_HOME HOME=/homeless-shelter nix -Lv eval --impure -E 'fetchTarball "https://git.lix.systems/lix-project/lix/archive/main.tar.gz"'
warning: ignoring error initializing Lix fetcher cache: error: creating directory '/homeless-shelter': Permission denied
"/nix/store/s9lxdnn0awp37n560bg4fgr497ah4hvw-source"
¹: https://www.sqlite.org/inmemorydb.html
Change-Id:
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|---|---|---|
| .github | ||
| bench | ||
| clang-tidy | ||
| contrib | ||
| doc | ||
| lix-doc | ||
| maintainers | ||
| meson | ||
| misc | ||
| nix-support | ||
| perl | ||
| scripts | ||
| src | ||
| tests | ||
| .clang-format | ||
| .clang-tidy | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .envrc | ||
| .gitignore | ||
| .version | ||
| boehmgc-coroutine-sp-fallback.diff | ||
| boehmgc-traceable_allocator-public.diff | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| default.nix | ||
| docker.nix | ||
| flake.lock | ||
| flake.nix | ||
| justfile | ||
| meson.build | ||
| meson.options | ||
| package.nix | ||
| precompiled-headers.h | ||
| README.md | ||
| shell.nix | ||
| treefmt.toml | ||
Lix
Lix is an implementation of Nix, a powerful package management system for Linux and other Unix systems that makes package management reliable and reproducible.
Read more about us at https://lix.systems.
Installation
On Linux and macOS the easiest way to install Nix is to run the following shell command (as a user other than root):
$ curl -sSf -L https://install.lix.systems/lix | sh -s -- install
For systems that already have Nix installed, such as NixOS systems, read our install page
Building And Developing
See our Hacking guide in our manual for instruction on how to to set up a development environment and build Lix from source.
Additional Resources
License
Lix is released under the LGPL v2.1.