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A63IHCMXH3F4V56HDXJLJVVHKXRSJCJMT2PWXXI2IW3J734J6SGQC
CLJQCY2XHIDNNMFBJ5PK3GQEN6RFALEFKXBJRWZPEIKR4PR5ZQ5AC
S3ZLZP3NXQXP6MOK7ACG7HIEKM66C2DF7PNUZB5LIHSUOOUKGUZQC
7YBYT2LQML2PKEO6UO4444AGSASS664UCDXW2YO3ALB7THQHCEBQC
my $cmd = "nix-store --max-silent-time 1800 --keep-going --no-build-output " .
my $cmd = "nix-store --max-silent-time 3600 --keep-going --no-build-output " .