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author | Michael Weiss <dev.primeos@gmail.com> | 2017-08-20 13:20:45 +0200 |
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committer | Nikolay Amiantov <ab@fmap.me> | 2017-08-29 05:25:12 +0400 |
commit | ea23f8bb079ef11c2d11859994d804c4e4940be5 (patch) | |
tree | eeddbd21ce9a0e4966550a532f606bc4894a2dbd /nixos/modules/rename.nix | |
parent | ecea06ab2e771808817dd7e0d2287b3ad0709de2 (diff) | |
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cups service: Automatically detect Gutenprint in drivers
Additional CUPS drivers can be added via "services.printing.drivers" but Gutenprint was an exception. It was possible to add a Gutenprint derivation to that list and it would work at first but unlike the other drivers Gutenprint requires a script to be run after each update or any attempt to print something would simply fail and an error would show up in the jobs queue (http://localhost:631/jobs/): "The PPD version (5.2.11) is not compatible with Gutenprint 5.2.13. Please run `/nix/store/7762kpyhfkcgmr3q81v1bbyy0bjhym80-gutenprint-5.2.13/sbin/cups-genppdupdate' as administrator." This is due to state in "/var/lib/cups/ppd" and one would need to run "/nix/store/.../bin/cups-genppdupdate -p /var/lib/cups/ppd" manually. The alternative was to enable the following option: "services.printing.gutenprint" but this had two disadvantages: 1) It is an exception that one could be unaware of or that could potentially cause some confusion. 2) One couldn't use a customized Gutenprint derivation in "services.printing.drivers" but would instead have to overwrite "pkgs.gutenprint". This new approach simply detects a Gutenprint derivation in "services.printing.gutenprint" by checking if the meta set of a derivation contains "isGutenprint = true". Therefore no special exception for Gutenprint would be required and it could easily be applied to other drivers if they would require such a script to be run.
Diffstat (limited to 'nixos/modules/rename.nix')
-rw-r--r-- | nixos/modules/rename.nix | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/nixos/modules/rename.nix b/nixos/modules/rename.nix index 800e12956f2..6b33eeb6e4e 100644 --- a/nixos/modules/rename.nix +++ b/nixos/modules/rename.nix @@ -1,4 +1,4 @@ -{ lib, ... }: +{ lib, pkgs, ... }: with lib; @@ -14,6 +14,10 @@ with lib; (mkRenamedOptionModule [ "networking" "enableRT73Firmware" ] [ "networking" "enableRalinkFirmware" ]) (mkRenamedOptionModule [ "services" "cadvisor" "host" ] [ "services" "cadvisor" "listenAddress" ]) + (mkChangedOptionModule [ "services" "printing" "gutenprint" ] [ "services" "printing" "drivers" ] + (config: + let enabled = getAttrFromPath [ "services" "printing" "gutenprint" ] config; + in if enabled then [ pkgs.gutenprint ] else [ ])) (mkRenamedOptionModule [ "services" "elasticsearch" "host" ] [ "services" "elasticsearch" "listenAddress" ]) (mkRenamedOptionModule [ "services" "graphite" "api" "host" ] [ "services" "graphite" "api" "listenAddress" ]) (mkRenamedOptionModule [ "services" "graphite" "web" "host" ] [ "services" "graphite" "web" "listenAddress" ]) |