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Tue, 31 Oct 2023 13:26:15 -0400 Received: from mail-4317.proton.ch ([185.70.43.17]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <attila@lendvai.name>) id 1qxsVH-0006AM-Da for guix-devel@gnu.org; Tue, 31 Oct 2023 13:26:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=lendvai.name; s=protonmail3; t=1698773165; x=1699032365; bh=1MVwvJ8Jj2EaXu2Wvs0blbjjVHQ3MVn78sc6Fi8PFik=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=kNEp7JRY9PYvyXP1kjiAskAsqfKa06Cq8qGLfS/TzrZMQFMJLnKzgV0ljG4DY56IF IpNWdk7fTerI4zD6uqAjIsh7bwHCNBTOhZ8qY1CW1sCZ5DvUivSpXonXNM+II3/EjR CJfHggbjpUsmxB0padAvLQHnJsibASrffw1uMksm8VRuDAYX3OfxfZqymKgrLxKXFO xvUPDpr1hxJm/7/nYxlWwlJUH1n7yAWm+K8nTD2rrrwvlo+UUTl0EZcufTjF70JmO+ TF0wNXkJ8ofdaJUawNCPl4a+ufvBxfO6eNCiA+pkZRZb62HbntfVUFNlUe94V5Fci2 2lCPHDf2zexrQ== Date: Tue, 31 Oct 2023 17:26:03 +0000 To: Felix Lechner <felix.lechner@lease-up.com> From: Attila Lendvai <attila@lendvai.name> Cc: guix-devel <guix-devel@gnu.org> Subject: Re: shepherd-action debug help needed Message-ID: <C_D4TjChpJIdDkFSdQy1mn6KyVnD5uI9jefzC36YRce7fboLzmJYe7U09017VUL_mOpakWY6vaLJeq3ttnkA8Jcr4KNeMyPqTOkaa_huysc=@lendvai.name> In-Reply-To: <87ttq7beoz.fsf@lease-up.com> References: <HwHJ7wSna1MCD7Ef6HOI0QsTO61uzCE0IdaPXOQ8XC7ci5ygUTi9Iy6G99znopc0ydlH8OrHZk1G__EDIfoqWI-m-BDZnV5wIZxmMYFURRo=@lendvai.name> <87ttq7beoz.fsf@lease-up.com> Feedback-ID: 28384833:user:proton MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=185.70.43.17; envelope-from=attila@lendvai.name; helo=mail-4317.proton.ch X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." <guix-devel.gnu.org> List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>, <mailto:guix-devel-request@gnu.org?subject=unsubscribe> List-Archive: <https://lists.gnu.org/archive/html/guix-devel> List-Post: <mailto:guix-devel@gnu.org> List-Help: <mailto:guix-devel-request@gnu.org?subject=help> List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>, <mailto:guix-devel-request@gnu.org?subject=subscribe> Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: guix-devel-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Queue-Id: BF88A36018 X-Migadu-Scanner: mx12.migadu.com X-Migadu-Spam-Score: -7.70 X-Spam-Score: -7.70 X-TUID: zRjeTG5bH6ZK > Exit code 127 means "command not found". [1] More information is > available in stderr (or sometimes stdout) if you can capture it. but how come binaries are not found when i have the full path for the comma= nds...? the install binary is only used to set the umask of the result. without it,= a simple invokation of tar also fails, even without --gzip. i dug a bit deeper, and it turned out that the SYSTEM call i thought was co= ming from guile was rebound by shepherd to point to its own SPAWN-SHELL-COM= MAND. through various complex code paths, it ends up calling fork+exec-comm= and. SPAWN-SHELL-COMMAND's role is to make the SYSTEM call non-blocking. as a quick test, i have added a simple (system "ls -l /bin/sh") call to my = action, and that fails, too. i'll need to add proper logging to shepherd and see what's going wrong. but= for that i need https://issues.guix.gnu.org/61750 merged. --=20 =E2=80=A2 attila lendvai =E2=80=A2 PGP: 963F 5D5F 45C7 DFCD 0A39 -- =E2=80=9CJustice is not concerned with the results of the various transacti= ons, but only with whether the transactions themselves are fair.=E2=80= =9D =09=E2=80=94 F.A. Hayek (1899=E2=80=931992), 'Law, Legislation and Liberty'= , I.6.j