Add missing RUST_LIB_SRC

README.md

@@ -23,9 +23,17 @@ On other distros:
 
 ### Note for Rust
 
-`cat /boot/config-$(uname -r) | grep CONFIG_RUST`
+Check required kernel conf CONFIG_RUST=y
 
-Must contains CONFIG_RUST=y
+```bash
+cat /boot/config-$(uname -r) | grep CONFIG_RUST
+```
+
+Generate rust-analyzer conf
+
+```bash
+make -C $LINUX_MODULES_FOLDER/build M=$(pwd) rust-analyzer
+```
 
 ## make : targets list
 

flake.nix

@@ -27,6 +27,11 @@
           packages = [ linux.moduleBuildDependencies ] ++ packages;
 
           LINUX_MODULES_FOLDER = "${linux.dev}/lib/modules/${linux.modDirVersion}";
+          
+          # Needed to build rust-analyzer conf to avoid error "Source code for the 'core' standard library could not be found"
+          # with check condition in below of $LINUX_MODULES_FOLDER/source/scripts/rust_is_available.sh file
+          # https://github.com/NixOS/nixpkgs/blob/6313551cd05425cd5b3e63fe47dbc324eabb15e4/pkgs/os-specific/linux/kernel/generic.nix#L154
+          RUST_LIB_SRC = pkgs.rustPlatform.rustLibSrc;
 
           shellHook = ''
             echo "Current Linux Kernel used : ${linux.version}"