Run down signed urls 2 - #639

these 18 derivations will be built:
  /nix/store/svb4i0sdhs2y0a4pzn1x43d0zqc155xh-psyche-python-extension-0.2.0.drv
  /nix/store/1d3ay7zdv8nb2xajnp219p5v24cxdwg3-psyche.drv
  /nix/store/29gz3ka0a1bfagnayq54bq5qhq0vxkfs-psyche-python-env-torch_vllm_flash-attn_liger-kernel_torchtitan.drv
  /nix/store/30mff2n1hg100klik62s5kdd66wmyxgs-psyche-centralized-server-0.2.0.drv
  /nix/store/gq98lchnd9vhsz48n94ja7bgncvzwk12-psyche-solana-client-0.2.0.drv
  /nix/store/8vdv2xv0mgsgb24xj90r0p26f9hzjxr0-psyche-solana-client.drv
  /nix/store/acg4q8kxfbj2806wnxl00isbk34a4pzm-psyche-solana-client-nixgl-wrapped.drv
  /nix/store/f7kxc2nc5w65fbrkd43fg98sxdjbsihi-psyche-centralized-client-0.2.0.drv
  /nix/store/h61j6v6mnvv5ag2hwv9kamd1pia1a3bf-psyche-centralized-client.drv
  /nix/store/bpd2h2f8irphh30fp9bbb128sy4sl1kk-psyche-centralized-client-nixgl-wrapped.drv
  /nix/store/gfcp445hhsh0rnl0fi3qhcv1w6mb0fqg-psyche-centralized-local-testnet-0.2.0.drv
  /nix/store/6dnb5cn9nyy871z2jhrj4y9fhay72dbc-psyche-sidecar-0.2.0.drv
  /nix/store/hdy7gsbyskyjprx3smfkmn9af5lrihff-psyche-sidecar.drv
  /nix/store/ngsgc6cp0db3jl2n2dg2sb7y2z72cimm-psyche-sidecar-nixgl-wrapped.drv
  /nix/store/4jc886vgfjjwal51j1v1a6fh8dsmzca8-psyche-book.drv
  /nix/store/ga97xpd4l1mqvp00y1mrr314686pnp28-Caddyfile.drv
  /nix/store/2k5qd0n1d1kyjrlcv3j69aqjnfi6mv0b-Caddyfile-formatted.drv
  /nix/store/kc76bq7imaf1zk7f53al0nspwi7hxgiz-validate-psyche-http-docs-caddyfile.drv
validate-psyche-http-docs-caddyfile> 2026/03/20 21:54:23.084	INFO	using config from file	{"file": "./Caddyfile"}
validate-psyche-http-docs-caddyfile> 2026/03/20 21:54:23.085	INFO	adapted config to JSON	{"adapter": "caddyfile"}
validate-psyche-http-docs-caddyfile> Valid configuration