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dmarc=fail reason="SPF not aligned (relaxed)" header.from=iit.it (policy=none) ARC-Seal: i=1; s=key1; d=yhetil.org; t=1678048336; a=rsa-sha256; cv=none; b=HfpJI1sSM0qcu+Im4Rd8GK6j6MfPKdtrTvSDL+l1dIMWeKMSaXI+Jnfvw5kat4LYSVADkZ M0ujGFmexDsRt+xh8KUS8XuRjBNRXqV4ehzwtecgO6eeAj6h83CuAB2d8fqvwmtFz7CGEv mOnBHsjcNTlZZ/mRB3POaqT5ihRxqb+rIDl7e2nCi/iMX6Pwh9FB3xw67L9Our3nhHCML3 aH+jf6B8iyP65Vq5dG31NCLVpNwg6pUAjfYXZncjIhVbd/U8fP7RM84Xq6/kOV1qRoCx+l j55gdjwRAoE8cShtPt498RVc5bCTdZz1fLe3+YD/NN6V+1oESjX0lyEQM/9f9g== X-Migadu-Scanner: scn1.migadu.com X-Migadu-Spam-Score: -2.11 X-Spam-Score: -2.11 X-Migadu-Queue-Id: 76B691935A Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=iit.it header.s=mx header.b=GBRs2f7A; spf=pass (aspmx1.migadu.com: domain of "bug-guix-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="bug-guix-bounces+larch=yhetil.org@gnu.org"; dmarc=fail reason="SPF not aligned (relaxed)" header.from=iit.it (policy=none) X-TUID: YtANav5mMKDu Hi, I think I'm experiencing the same issue. I need opencv 3.4, found a commit with it=20 (63856931dbe1e72311b472347331ce1c16b0de0b) On two machines > guix describe: guix eb87d2c > guix describe: guix 59b102c guix time-machine --commit=3D63856931dbe1e72311b472347331ce1c16b0de0b --=20 build opencv Computing Guix derivation for 'x86_64-linux'... Backtrace: 5-(primitive-load=20 "/gnu/store/d5llsvv8g1idnm87q7cs4r5a4s0=85") In ice-9/eval.scm: 155:9 4 (_ _) 159:9 3 (_ #(#(#(#(#(#(#(#(#(#(#(=85) =85) =85) =85) =85) =85) =85)=20 =85) =85) =85) =85)) 173:47 2 (_ #(#(#(#(#(#(#(#(#(#(#(=85) =85) =85) =85) =85) =85) =85)=20 =85) =85) =85) =85)) In ./guix/self.scm: 914:4 1 (guix-derivation "/gnu/store/hp2afllp9vsp4kmr67nrhr8ig=85"=20 =85) 885:2 0 (guile-for-build "3.0") ./guix/self.scm:885:2: In procedure guile-for-build: Throw to key `match-error' with args `("match" "no matching pattern"=20 "3.0")'. guix time-machine: error: You found a bug: the program=20 '/gnu/store/d5llsvv8g1idnm87q7cs4r5a4s0kxyap-compute-guix-derivation' failed to compute the derivation for Guix (version:=20 "63856931dbe1e72311b472347331ce1c16b0de0b"; system: "x86_64-linux"; host version: "59b102cab9d66ba0c561ed9ed8df04f9fc340bd2"; pull-version:=20 1). Please report it by email to . Same happens with --no-grafts, on both machines. Any idea on what is causing it? Thanks!