I was trying to use the driverless thing in CUPS to be able to add
AirPrint printers on my network but 'driverless list' would never
show any printers even with Avahi running.
Turns out the driverless binary is shelling out to ippfind and
passing a long string of args to act as a filter, and that filter
depends on echo having an -e flag to print in a format that
driverless reads back. Since we don't have -e, it was just reading
back garbage.
ippfind -T 0 _ipps._tcp _ipp._tcp ! --txt printer-type --and \( --txt-pdl
image/pwg-raster --or --txt-pdl application/PCLm --or --txt-pdl image/urf --or
--txt-pdl application/pdf \) -x echo -en
'\n{service_scheme}\t{service_name}\t{service_domain}\t{txt_usb_MFG}\t{txt_usb_MDL}\t{txt_product}\t{txt_ty}\t{service_name}\t{txt_pdl}\t{txt_UUID}\t{txt_rfo}\t'
\; --local -x echo -en L \;
The easiest solution seemed to be to depend on gecho from coreutils
but maybe there's a shorter path.
diff --git print/cups-filters/Makefile print/cups-filters/Makefile
index c34782cf7e5..9ec9dfb9e60 100644
--- print/cups-filters/Makefile
+++ print/cups-filters/Makefile
@@ -2,7 +2,7 @@ COMMENT= OpenPrinting CUPS filters
V= 2.0.1
DISTNAME= cups-filters-${V}
-REVISION= 0
+REVISION= 1
CATEGORIES= print
@@ -32,7 +32,8 @@ LIB_DEPENDS= print/libcupsfilters \
# make it easier for users: bring in foomatic-db and allow the
# regeneration of PPD files from share/foomatic/db/source/*/*.xml
-RUN_DEPENDS += print/foomatic-db-engine
+RUN_DEPENDS += print/foomatic-db-engine \
+ sysutils/coreutils
FAKE_FLAGS= pkgfontconfigdir=${PREFIX}/share/examples/cups-filters \
pkgcupsserverrootdir=${PREFIX}/share/examples/cups-filters/cups
diff --git print/cups-filters/patches/patch-utils_driverless_c
print/cups-filters/patches/patch-utils_driverless_c
new file mode 100644
index 00000000000..e234226fbec
--- /dev/null
+++ print/cups-filters/patches/patch-utils_driverless_c
@@ -0,0 +1,26 @@
+--- utils/driverless.c.orig Sun Feb 15 21:03:40 2026
++++ utils/driverless.c Sun Feb 15 21:04:25 2026
+@@ -419,7 +419,11 @@
+ ippfind_argv[i++] = "application/pdf"; /* PDF */
+ ippfind_argv[i++] = ")";
+ ippfind_argv[i++] = "-x";
++#ifdef __OpenBSD__
++ ippfind_argv[i++] = "gecho"; /* Output the needed data fields */
++#else
+ ippfind_argv[i++] = "echo"; /* Output the needed data fields */
++#endif
+ ippfind_argv[i++] = "-en"; /* separated by tab characters */
+ if (mode < 0) {
+ if (isFax)
+@@ -440,7 +444,11 @@
+ if (mode < 0) {
+ ippfind_argv[i++] = "--local"; /* Rest only if local service */
+ ippfind_argv[i++] = "-x";
++#ifdef __OpenBSD__
++ ippfind_argv[i++] = "gecho"; /* Output an 'L' at the end of the
*/
++#else
+ ippfind_argv[i++] = "echo"; /* Output an 'L' at the end of the
*/
++#endif
+ ippfind_argv[i++] = "-en"; /* line */
+ ippfind_argv[i++] = "L";
+ ippfind_argv[i++] = ";";
