Can I somehow do nix shell nixpkgs#rust-analyzer nixpkgs#openssl nixpkgs#pkg-config github:nix-community/fenix#complete without running nix flake init first?

Basically when I have to temporarily work on Rust project that isn't flakified, I just want to get the dev env working without having some extra files checked in.

And you probably want someting like

 nix shell github:nix-community/fenix#complete.toolchain

for enix.

And you probably want someting like

 nix shell github:nix-community/fenix#complete.toolchain

for fenix.

anyone's using vscode and rust-analyzer? I've tried about a dozen configurations now and each one breaks in a new and exciting way :) what I want to have is nix shell that's capable of building a rust project and packaging it into docker with the openssl (rustls is known broken for my use case) and a working rust-analyzer so I could write the code with some LSP support. My very latest iteration was trying to use ipetkov/crane but rust-analyzer fails on that with

[ERROR rust_analyzer::lsp_utils] rust-analyzer failed to load workspace: Failed to find sysroot for Cargo.toml file /home/nixos/src/kube-cidr-manager/Cargo.toml. Is rust-src installed?: can't load standard library from sysroot
/nix/store/n7m9l6djxf3xcdc2dk9scc6rbpw825p9-rustc-1.63.0
(discovered via `rustc --print sysroot`)
try installing the Rust source the same way you installed rustc

If I add RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}" to my mkShell attrs then rust-analyzer seems to work too. To some extent:

proc macro `main` not expanded: Cannot create expander for /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so: Io(Custom { kind: InvalidData, error: DlOpen { desc: "/nix/store/0xxjx37fcy2nl3yz6igmv4mag2a7giq6-glibc-2.33-123/lib/libc.so.6: version `GLIBC_2.34\' not found (required by /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so)" } })rust-analyzerunresolved-proc-macro

If I add RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}" to my mkShell attrs then rust-analyzer seems to work too. To some extent:

proc macro mainnot expanded: Cannot create expander for /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so: Io(Custom { kind: InvalidData, error: DlOpen { desc: "/nix/store/0xxjx37fcy2nl3yz6igmv4mag2a7giq6-glibc-2.33-123/lib/libc.so.6: versionGLIBC_2.34' not found (required by /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so)" } })rust-analyzerunresolved-proc-macro`

If I add RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}" to my mkShell attrs then rust-analyzer seems to work too. To some extent:

proc macro mainnot expanded: Cannot create expander for /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so: Io(Custom { kind: InvalidData, error: DlOpen { desc: "/nix/store/0xxjx37fcy2nl3yz6igmv4mag2a7giq6-glibc-2.33-123/lib/libc.so.6: versionGLIBC\_2.34' not found (required by /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio\_macros-a639847ca16674fe.so)" } })rust-analyzerunresolved-proc-macro\

If I add RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}" to my mkShell attrs then rust-analyzer seems to work too. To some extent:

proc macro mainnot expanded: Cannot create expander for /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio_macros-a639847ca16674fe.so: Io(Custom { kind: InvalidData, error: DlOpen { desc: "/nix/store/0xxjx37fcy2nl3yz6igmv4mag2a7giq6-glibc-2.33-123/lib/libc.so.6: versionGLIBC\_2.34' not found (required by /home/nixos/src/kube-cidr-manager/target/debug/deps/libtokio\_macros-a639847ca16674fe.so)" } })rust-analyzerunresolved-proc-macro