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Bryan Bennett 2024-01-05 06:25:13 -05:00
parent 31cac9373c
commit 5e505b178b
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13 changed files with 486 additions and 165 deletions
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70
lib/lib.re
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@ -1,3 +1,73 @@
open Core;
module Unix = Core_unix;
module Util = Flake_env__util;
module Watches = Flake_env__watches;
module Versions = Flake_env__versions;
let print_cur_cache = (profile_rc) => {
In_channel.read_all(profile_rc) |> Printf.printf("%s")
};
let clean_old_gcroots = (layout_dir) => {
Util.rmrf(layout_dir ++ "/flake-inputs/");
Util.rmrf(layout_dir);
Unix.mkdir_p(layout_dir ++ "/flake-inputs/");
};
let add_gcroot = (store_path, symlink) => {
switch (Util.nix(["build", "--out-link", symlink, store_path])) {
| (Ok(), _) => Ok()
| (err, _) => err
}
};
let freshen_cache = (layout_dir, hash, flake_specifier, other_args) => {
clean_old_gcroots(layout_dir);
let tmp_profile = layout_dir ++ "flake-tmp-profile." ++ Core.Pid.to_string(Core_unix.getpid());
let pde_args = ["print-dev-env", "--profile", tmp_profile, flake_specifier, ...other_args];
let (exit_code, stdout_content) = Util.nix(pde_args);
let profile = layout_dir ++ "/flake-profile-" ++ hash;
let profile_rc = profile ++ ".rc";
switch (exit_code) {
| Ok() => {
Out_channel.with_file(~f=f=> Out_channel.output_string(f, stdout_content), profile_rc);
switch (add_gcroot(tmp_profile, profile)) {
| Ok() => {
Sys_unix.remove(tmp_profile);
let flake_input_cache_path = layout_dir ++ "/flake-inputs/"
let flake_inputs = Watches.get_input_paths();
flake_inputs |> List.iter(~f=(inpt) => {
switch (add_gcroot("/nix/store/" ++ inpt, flake_input_cache_path ++ inpt)) {
| Ok() => ()
| err => Printf.eprintf("Failed creating flake-input gcroot: %s\n", Core_unix.Exit_or_signal.to_string_hum(err));
};
});
print_cur_cache(profile_rc);
}
| err => {
Printf.eprintf("Failed creating gcroot: %s\n", Core_unix.Exit_or_signal.to_string_hum(err));
exit(1);
}
};
}
| err => {
Printf.eprintf("Failed evaluating flake: %s\n", Core_unix.Exit_or_signal.to_string_hum(err));
exit(1);
}
};
};
let preflight = (layout_directory) => {
switch (Versions.preflight_versions(), Sys_unix.is_directory(layout_directory)) {
| (Ok(_), `Yes) => Ok()
| (Ok(_), _) => {
Unix.mkdir_p(layout_directory);
Ok()
}
| (err, _) => err
}
}