nix-darwin

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On aarch64-darwin, I get the following output from nix:

<N> ➜ darwin-rebuild -L --flake /Users/jamie/Git/nixfiles switch
building the system configuration...
error: cannot link '/nix/store/.tmp-link-64480-79859421' to '/nix/store/.links/0i6ypwi0pzkgpxxqprlpyik72zxzkvkzrj7ahqj5b6hmhv2ldxm0': File exists
error: cannot link '/nix/store/.tmp-link-64480-1103639509' to '/nix/store/.links/0dwrq1sy5fawdjjvm0na718awbd10xn6dg3i0xxg9f7r5d9aa968': File exists
...

I have to pass --fallback to darwin-rebuild to get it to work.

Same for me on two systems. One is an intel MBP and the other one aarch64-darwin as well.

This has also come up for me on aarch64-darwin from time to time. In my case running the command again solved the issue. Don't really have any idea what's causing it.