I have a shell that comes from this use of Naersk. When I open a shell, it pre-builds all my dependencies. The naersk docs show just throwing rustc and cargo into a mkShell but that isn't sufficient for the case I show below. Is there a way to ask naersk to stop prebuilding and just use buildPackage for my shell?

naersk-lib.buildPackage {
          src = ./.;

          nativeBuildInputs = with pkgs; [
            clang
            cpiotools.defaultPackage.${system}
            grub2_efi
            jq
            nix
            pkgsStatic.pkg-config
            pkgsStatic.stdenv.cc
            qemu
            rustfmt
            which
            vim # xxd
          ];
          buildInputs = with pkgs; [ pkgsStatic.zstd cryptsetupStatic rustPlatform.bindgenHook ];

          OVMF_PATH = pkgs.OVMF.fd;

          # Configures the target which will be built.
          # ref: https://doc.rust-lang.org/cargo/reference/config.html#buildtarget
          CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";

          # Enables static compilation.
          #
          # If the resulting executable is still considered dynamically
          # linked by ldd but doesn't have anything actually linked to it,
          # don't worry. It's still statically linked. It just has static
          # position independent execution enabled.
          # ref: https://github.com/rust-lang/rust/issues/79624#issuecomment-737415388
          CARGO_BUILD_RUSTFLAGS = "-C target-feature=+crt-static";

          # Configures the linker which will be used. cc.targetPrefix is
          # sometimes different than the targets used by rust. i.e.: the
          # mingw-w64 linker is "x86_64-w64-mingw32-gcc" whereas the rust
          # target is "x86_64-pc-windows-gnu".
          #
          # This is only necessary if rustc doesn't already know the correct linker to use.
          #
          # ref: https://doc.rust-lang.org/cargo/reference/config.html#targettriplelinker
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER = with pkgs.pkgsStatic.stdenv;
            "${cc}/bin/${cc.targetPrefix}gcc";
          # link against libc.a
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS = "-lc";

          doCheck = true;
        };

In reply to @grahamc:nixos.org

I have a shell that comes from this use of Naersk. When I open a shell, it pre-builds all my dependencies. The naersk docs show just throwing rustc and cargo into a mkShell but that isn't sufficient for the case I show below. Is there a way to ask naersk to stop prebuilding and just use buildPackage for my shell?

naersk-lib.buildPackage {
          src = ./.;

          nativeBuildInputs = with pkgs; [
            clang
            cpiotools.defaultPackage.${system}
            grub2_efi
            jq
            nix
            pkgsStatic.pkg-config
            pkgsStatic.stdenv.cc
            qemu
            rustfmt
            which
            vim # xxd
          ];
          buildInputs = with pkgs; [ pkgsStatic.zstd cryptsetupStatic rustPlatform.bindgenHook ];

          OVMF_PATH = pkgs.OVMF.fd;

          # Configures the target which will be built.
          # ref: https://doc.rust-lang.org/cargo/reference/config.html#buildtarget
          CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";

          # Enables static compilation.
          #
          # If the resulting executable is still considered dynamically
          # linked by ldd but doesn't have anything actually linked to it,
          # don't worry. It's still statically linked. It just has static
          # position independent execution enabled.
          # ref: https://github.com/rust-lang/rust/issues/79624#issuecomment-737415388
          CARGO_BUILD_RUSTFLAGS = "-C target-feature=+crt-static";

          # Configures the linker which will be used. cc.targetPrefix is
          # sometimes different than the targets used by rust. i.e.: the
          # mingw-w64 linker is "x86_64-w64-mingw32-gcc" whereas the rust
          # target is "x86_64-pc-windows-gnu".
          #
          # This is only necessary if rustc doesn't already know the correct linker to use.
          #
          # ref: https://doc.rust-lang.org/cargo/reference/config.html#targettriplelinker
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER = with pkgs.pkgsStatic.stdenv;
            "${cc}/bin/${cc.targetPrefix}gcc";
          # link against libc.a
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS = "-lc";

          doCheck = true;
        };