add variable dpi per system

default.nix

@@ -7,12 +7,13 @@ i3 = with_lock: pkgs.callPackage ./i3/i3.nix {
 	inherit (bin) screenshot_public;
 	inherit with_lock;
 };
+xres = dpi: pkgs.callPackage ./x/default.nix { inherit dpi; };
 in lib.mapAttrs (k: paths:
 	pkgs.symlinkJoin { inherit paths; name = "dotfiles-${k}"; }
 ) {
-	ascanius = [(i3 true)];
-	woodhouse = [(i3 false)];
+	ascanius = [(i3 true) (xres 109)];
+	woodhouse = [(i3 false) (xres 44)];
 	pennyworth = [];
 	frumar = [];
-	jarvis = [(i3 true)];
+	jarvis = [(i3 true) (xres 192)];
 }

x/.Xdefaults

@@ -58,7 +58,7 @@ URxvt*background: [85]#002b36
 URxvt.scrollstyle: plain
 URxvt.scrollBar_right: true
 URxvt.perl-ext-common:  default,matcher,font-size,vtwheel
-URxvt.url-launcher:      firefox
+URxvt.url-launcher:      chromium
 URxvt.matcher.button:   1
 URxvt.urgentOnBell: True
 URxvt.depth: 32
@@ -73,3 +73,5 @@ rofi.font: Source Code Pro 12
 URxvt.font-size.step: 4
 URxvt.keysym.C-equal:	perl:font-size:increase
 URxvt.keysym.C-minus:	perl:font-size:decrease
+
+#include "/home/yorick/dotfiles/result/setdpi"

x/default.nix

@@ -0,0 +1,6 @@
+{writeTextDir, dpi ? 96}:
+
+writeTextDir "setdpi" ''
+Xft.dpi: ${toString dpi}
+*dpi: ${toString dpi}
+''