config: update things and add shell.nix

.cargo/config.toml

@@ -1,5 +1,6 @@
 [unstable]
 build-std = ["core", "compiler_builtins", "alloc"]
+json-target-spec = true
 
 [build]
 target = "i686-kolibri.json"

i686-kolibri.json

@@ -5,7 +5,6 @@
     "dynamic-linking": false,
     "executables": true,
     "has-rpath": true,
-    "is-builtin": false,
     "linker-flavor": "ld.lld",
     "linker": "rust-lld",
     "llvm-target": "i686-unknown-none-code32",
@@ -14,9 +13,9 @@
     "relocation-model": "static",
     "position-independent-executables": false,
     "relro-level": "off",
-    "target-c-int-width": "32",
+    "target-c-int-width": 32,
     "target-endian": "little",
-    "target-pointer-width": "32",
+    "target-pointer-width": 32,
     "vendor": "unknown",
     "disable-redzone": true,
     "panic-strategy": "abort",

rust-toolchain

@@ -1 +1,4 @@
-nightly
+[toolchain]
+channel = "nightly"
+components = ["rust-src", "llvm-tools-preview"]
+profile = "default"

shell.nix

@@ -0,0 +1,14 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  packages = with pkgs; [
+    rustup
+    cargo-make
+    cargo-binutils
+    fasm
+  ];
+
+  shellHook = ''
+    export PATH="$HOME/.cargo/bin:$PATH"
+  '';
+}