tjh.dev / nixpkgs
Clone of https://github.com/NixOS/nixpkgs.git (to stress-test knotserver)
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nixpkgs / pkgs / misc / drivers / epkowa / firmware_location.patch
at devShellTools-shell 21 lines 879 B view raw
1Explanation: 2in libesci-interpreter-gt-f720.so in 3libesci_interpreter_gt_f720_342::libesci_interpreter_gt_f720_348 at 0xdf74: the 4binary blob esfw8b.bin is searched either in /usr/share/esci/ or in 5$ESCI_FIRMWARE_DIR. But since this library is to be used wia libsane.so in 6every binary in the system, we can't wrapProgram the relevant executables to 7set this environment variable. Instead, we patch iscan to set this variable 8before loading libesci-interpreter-gt-f720.so. 9--- backend/channel-usb.c.orig 2017-08-14 11:24:27.669582456 +0200 10+++ backend/channel-usb.c 2017-08-14 11:31:40.509010897 +0200 11@@ -169,6 +169,10 @@ 12 { 13 SANE_Status s; 14 15+ setenv("ESCI_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1); 16+ setenv("ISCAN_FW_DIR", NIX_ESCI_PREFIX, 1); 17+ setenv("ISCAN_FIRMWARE_DIR", NIX_ESCI_PREFIX, 1); 18+ 19 s = sanei_usb_open (self->name, &self->fd); 20 21 if (SANE_STATUS_GOOD == s)