these 3 derivations will be built:
  /nix/store/8ddhxvli270pv476mhm00za9r01zhisx-source.drv
  /nix/store/mbdg13wbgngcb84fsb4qz98wvbc723qq-concord-mcp-pnpm-deps.drv
  /nix/store/fc06pzfl01gd4cxcsx9wc8a9vzwlrnwx-concord-mcp-0.20.0.drv
building '/nix/store/8ddhxvli270pv476mhm00za9r01zhisx-source.drv'
source> structuredAttrs is enabled
source> 
source> trying https://github.com/Get-Concord-AI/concord-mcp/archive/v0.20.0.tar.gz
source>   % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
source>                                  Dload  Upload  Total   Spent   Left   Speed
source> 
source>   0      0   0      0   0      0      0      0                              0
source>   0      0   0      0   0      0      0      0                              0
source>   0      0   0      0   0      0      0      0                              0
source> 
source>   0      0   0      0   0      0      0      0                              0
source> 100  1.30M 100  1.30M   0      0  5.38M      0                              0
source> 100  1.30M 100  1.30M   0      0  5.37M      0                              0
source> 100  1.30M 100  1.30M   0      0  5.37M      0                              0
source> unpacking source archive /build/download.tar.gz
error: hash mismatch in fixed-output derivation '/nix/store/8ddhxvli270pv476mhm00za9r01zhisx-source.drv':
         specified: sha256-ocI6BbYxJinZOiY4MSjZmWnT4o2bLVWBqJxZ5AkFP3k=
            got:    sha256-xGge5VUxx9MqBlF9WJHZIumtkEalmj+5kE8jxaMGDtM=
error: Cannot build '/nix/store/mbdg13wbgngcb84fsb4qz98wvbc723qq-concord-mcp-pnpm-deps.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/5sy76pcmirx1ipj08xjvbmrk3ymk07kf-concord-mcp-pnpm-deps
error: Cannot build '/nix/store/fc06pzfl01gd4cxcsx9wc8a9vzwlrnwx-concord-mcp-0.20.0.drv'.
       Reason: 2 dependencies failed.
       Output paths:
         /nix/store/ibvc040p4gxcks5bw9aiwlp20m7ldzyk-concord-mcp-0.20.0