nix-serve.hq.c3d2.de - SSL connect error - curl error 35

[milahu]

nix-build ...
warning: error: unable to download 'https://nix-serve.hq.c3d2.de/kpd4v8ns8cns7ir8rl3yf49fq0m7m55z.narinfo': SSL connect error (35); retrying in 344 ms

curl -I https://nix-serve.hq.c3d2.de/kpd4v8ns8cns7ir8rl3yf49fq0m7m55z.narinfo -v
*   Trying 2a00:8180:2c00:282:1024:5fff:febd:9be7:443...
* Connected to nix-serve.hq.c3d2.de (2a00:8180:2c00:282:1024:5fff:febd:9be7) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
*  CAfile: /etc/ssl/certs/ca-bundle.crt
*  CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):

[ curl hangs for a few seconds ]

* OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to nix-serve.hq.c3d2.de:443 
* Closing connection 0
curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to nix-serve.hq.c3d2.de:443

i know it's off-topic here in this repo, but i cant create issues at https://gitea.c3d2.de/c3d2/nix-config

related #3

[astro]

I have now setup Github actions with a Cachix cache. I've added the corresponding settings to the flake.nix so that you can easily obtain the Linux kernel built by Microsoft.