Working ccls pico sdk headers.

.ccls

@@ -0,0 +1,7 @@
+arm-none-eabi-gcc
+# Headers
+-Isrc
+-Isrc/wifi/headers
+-Ibuild/generated/pico_base
+
+# Flags

shell.nix

@@ -18,6 +18,7 @@ pkgs.mkShell {
   ];
   shellHook = ''
     export PICO_SDK_PATH=${local-pico-sdk}/lib/pico-sdk
+    export NIX_CFLAGS_COMPILE="-isystem $(shopt -s globstar && echo $PICO_SDK_PATH/lib/**/include | sed "s/ / -isystem /g") -isystem $(shopt -s globstar && echo $PICO_SDK_PATH/src/**/include | sed "s/ / -isystem /g") -isystem $(shopt -s globstar && echo $PICO_SDK_PATH/lib/**/src | sed "s/ / -isystem /g") $NIX_CFLAGS_COMPILE"
     unset TEMP TMP TEMPDIR TMPDIR
   '';
 }