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aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=IwWFao8k; dmarc=pass (policy=none) header.from=gnu.org; 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" X-Migadu-Spam-Score: -3.93 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gnu.org header.s=fencepost-gnu-org header.b=IwWFao8k; dmarc=pass (policy=none) header.from=gnu.org; 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" X-Migadu-Queue-Id: D343FCDEA X-Spam-Score: -3.93 X-Migadu-Scanner: scn1.migadu.com X-TUID: gGAmdwqVkDSo Hello, The failing code is at gexp.scm:901:23, which corresponds to this: (mlet %store-monad ((obj (lower-object thing system #:target (and (not native?) target)))) 901: (return (match obj ((? derivation? drv) (derivation-input drv (list output))) ((? store-item? item) item) ((? self-quoting?) ;; Some inputs such as can lower to ;; a self-quoting object that FILTERM will filter ;; out. #f)))) That means (lower-object polkit) returned polkit (the package object) instead of a derivation, hence =E2=80=98match-error=E2=80=99. This is normally impossible: =E2=80=98lower-object=E2=80=99 calls =E2=80=98= package->derivation=E2=80=99, which returns a derivation. But maybe something weird is happening when =E2=80=98build-derivations=E2=80=99 aborts to the build-handler prompt, or = when the continuation is eventually resumed; maybe the object cache gets =E2=80=9Cpoisoned=E2=80=9D with an incorrect value during that process. So far the only reproducer we have seems to be along the lines of: grab the ISO, run =E2=80=98guix pull=E2=80=99 (if it=E2=80=99s the 1.3.0 ISO; if= it=E2=80=99s a fresh ISO, that=E2=80=99s not necessary), run =E2=80=98guix system init=E2=80=99, watc= h it crash. Does anyone have a simpler reproducer? To be continued=E2=80=A6 Ludo=E2=80=99.