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What happens if I push all of nixpkgs
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12345678910111213141516171819202122Explanation:in libesci-interpreter-gt-f720.so inlibesci_interpreter_gt_f720_342::libesci_interpreter_gt_f720_348 at 0xdf74: thebinary blob esfw8b.bin is searched either in /usr/share/esci/ or in$ESCI_FIRMWARE_DIR. But since this library is to be used wia libsane.so inevery binary in the system, we can't wrapProgram the relevant executables toset this environment variable. Instead, we patch iscan to set this variablebefore loading libesci-interpreter-gt-f720.so.--- backend/channel-usb.c.orig 2017-08-14 11:24:27.669582456 +0200+++ backend/channel-usb.c 2017-08-14 11:31:40.509010897 +0200@@ -169,6 +169,10 @@ { SANE_Status s; + setenv("ESCI_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1);+ setenv("ISCAN_FW_DIR", NIX_ESCI_PREFIX, 1);+ setenv("ISCAN_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1);+ s = sanei_usb_open (self->name, &self->fd); if (SANE_STATUS_GOOD == s)