nix: fix lanzatool integration/merge mixup

flake.nix

@@ -130,8 +130,7 @@
       '';
     in {
       overlays.default = final: prev: {
-        inherit lanzaboote;
-        lanzatool = lanzatoolBin;
+        inherit lanzatool;
       };
 
       nixosModules.lanzaboote = import ./nix/lanzaboote.nix;
@@ -158,7 +157,7 @@
         ];
 
         inputsFrom = [
-          lanzatool
+          lanzatoolBin
           lanzaboote
         ];
       };
@@ -188,7 +187,6 @@
               enable = true;
               enrollKeys = lib.mkDefault true;
               pkiBundle = ./pki;
-              package = lanzatool;
             };
           };
         };

rust/lanzatool/src/cli.rs

@@ -70,7 +70,6 @@ fn install(
 ) -> Result<()> {
     let lanzaboote_stub = std::env::var("LANZABOOTE_STUB")?;
     let initrd_stub = std::env::var("LANZABOOTE_INITRD_STUB")?;
-    let sbsigntool = std::env::var("SBSIGNTOOL")?;
 
     install::install(
         public_key,
@@ -78,8 +77,7 @@ fn install(
         pki_bundle,
         auto_enroll,
         bootspec,
-        Path::new(&sbsigntool),
         Path::new(&lanzaboote_stub),
-        Path::new(&initrd_stub)
+        Path::new(&initrd_stub),
     )
 }

rust/lanzatool/src/install.rs

@@ -15,7 +15,6 @@ pub fn install(
     _pki_bundle: Option<PathBuf>,
     _auto_enroll: bool,
     bootspec: &Path,
-    sbsigntool: &Path,
     lanzaboote_stub: &Path,
     initrd_stub: &Path,
 ) -> Result<()> {