Reusing quicklisp-to-nix

[teu5us]

Using quicklisp packages is not really convenient currently. I think we could make it a little better with some suble changes.

quicklisp-to-nix shell

A local shell is used to generate expressions for quicklisp packages in the nixpkgs tree. It cannot be copied to a directory and used directly because relative paths are used (lines 2 and 4).

I wonder if all the required dependencies can be included with quicklisp-to-nix. For now at least I rewrote the paths with pkgs.path in a local shell.

generated quicklisp-to-nix.nix

quicklisp-to-nix.nix also uses a relative path ./define-package.nix, so it cannot be used without editing in a local shell.

Perhaps buildLispPackage could be inherited like clwrapper. An absolute path with pkgs.path also works, but does not seem right to me.

quicklisp-to-nix-overrides.nix missing

quicklisp-to-nix-overrides.nix is not created by the generator if no such file exists and has to be manually copied over to the local shell.

[teu5us]

Shell I'm using:

{ pkgs ? import <nixpkgs> {} }:

with pkgs;

let
  buildLispPackage = lispPackages.buildLispPackage;
  qlPkgsFor = clwrapper: callPackage ./nix-lisp/quicklisp-to-nix.nix {
    inherit clwrapper buildLispPackage;
  };
  localQlPkgs = dontRecurseIntoAttrs (qlPkgsFor (wrapLisp sbcl));
  qlPkgs = localQlPkgs // quicklispPackagesSBCL;
  lp = recurseIntoAttrs (qlPkgs // (lispPackagesFor (wrapLisp sbcl)));
in
mkShell {
  buildInputs = [
    sbcl lp.clwrapper lp.hunchentoot lp.djula lp.cl-pass
  ];
}

Modified part of the generator shell:

{ pkgs ? import <nixpkgs> {} }:
with import (pkgs.path + "/default.nix") {};
let
openssl_lib_marked = import (pkgs.path + "/pkgs/development/lisp-modules/openssl-lib-marked.nix");
...

Here I use packages that exist in the pkgs.lispPackages set. They are checked by quicklisp-to-nix and expressions are created, but nix uses the old ones from the tree.

quicklisp-to-nix, when used locally, should check if a requested package already exists in pkgs/development/lisp-modules/quicklisp-to-nix-systems.txt.

[teu5us]

I made a shell for this here.

ql-to-nix.lisp is edited to check if the requested package exists in the nixpkgs tree and skip it when called with argument --local.
top-package.emb is edited to accept buildLispPackage as an argument.

Seems to work, but I have not tested it with something requiring overrides like in quicklisp-to-nix-overrides.nix.