./plic.zig:47:21: error: expected type '*std.hash_map.HashMap(u32,fn() void,std.hash_map.getAutoHashFn(u32).hash,std.hash_map.getAutoEqlFn(u32).eql)', found '*const std.hash_map.HashMap(u32,fn() void,std.hash_map.getAutoHashFn(u32).hash,std.hash_map.getAutoEqlFn(u32).eql)'
        _ = try self.map.put(irq, handler);
                    ^
./plic.zig:47:21: note: cast discards const qualifier
        _ = try self.map.put(irq, handler);
                    ^
./plic.zig:47:29: note: referenced here
        _ = try self.map.put(irq, handler);
                            ^
main...The following command exited with error code 1:
/usr/bin/zig build-exe /home/soeren/src/zig-riscv-embedded/main.zig --c-source /home/soeren/src/zig-riscv-embedded/start.S --c-source /home/soeren/src/zig-riscv-embedded/irq.S --cache-dir /home/soeren/src/zig-riscv-embedded/zig-cache --name main -target riscv32-freestanding-none --linker-script /home/soeren/src/zig-riscv-embedded/fe310_g000.ld --cache on 

Build failed. The following command failed:
/home/soeren/src/zig-riscv-embedded/zig-cache/o/Un5ssZzBXMtxOgAnZ54jxdGgamBKvLRYf_A6LtZCSlJfJxj5T2KYBS2SF3XjvCdU/build /usr/bin/zig /home/soeren/src/zig-riscv-embedded /home/soeren/src/zig-riscv-embedded/zig-cache