transformer: use package version instead of commit ID

flake.nix

@@ -70,12 +70,7 @@
 
     perSystem = { config, system, pkgs, lib, ... }:
       let
-        # Include the Git commit hash as the version of bombon in generated Boms
-        GIT_COMMIT = lib.optionalString (self ? rev) self.rev;
-
-        transformer = pkgs.callPackage ./nix/packages/transformer.nix {
-          inherit GIT_COMMIT;
-        };
+        transformer = pkgs.callPackage ./nix/packages/transformer.nix { };
 
         buildBom = pkgs.callPackage ./nix/build-bom.nix {
           inherit transformer;
@@ -138,8 +133,6 @@
           inputsFrom = [ transformer ];
 
           RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
-
-          inherit GIT_COMMIT;
         };
 
       };

nix/packages/transformer.nix

@@ -1,8 +1,6 @@
 { lib
 , rustPlatform
 , gitignoreSource
-
-, GIT_COMMIT
 }:
 
 rustPlatform.buildRustPackage {
@@ -15,10 +13,6 @@ rustPlatform.buildRustPackage {
     lockFile = ../../rust/transformer/Cargo.lock;
   };
 
-  env = {
-    inherit GIT_COMMIT;
-  };
-
   meta = with lib; {
     homepage = "https://github.com/nikstur/bombon";
     license = licenses.mit;

rust/transformer/src/cyclonedx.rs

@@ -11,7 +11,7 @@ use cyclonedx_bom::models::tool::{Tool, Tools};
 
 use crate::buildtime_input::{self, Derivation, Meta};
 
-const VERSION: &str = env!("GIT_COMMIT");
+const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 pub struct CycloneDXBom(Bom);