From 8975830af783be1d851ec6d2c330f88a2b841e7f Mon Sep 17 00:00:00 2001
From: Daylin Morgan <daylinmorgan@gmail.com>
Date: Sun, 28 Jan 2024 11:00:05 -0600
Subject: [PATCH] styx is dead long live oizys

---
 flake.nix          |   6 +--
 lib/default.nix    |   6 +--
 modules/nix.nix    |   2 +-
 oizys/default.nix  |   9 ++++
 oizys/oizys.nim    | 127 +++++++++++++++++++++++++++++++++++++++++++++
 oizys/oizys.nimble |  13 +++++
 6 files changed, 156 insertions(+), 7 deletions(-)
 create mode 100644 oizys/default.nix
 create mode 100644 oizys/oizys.nim
 create mode 100644 oizys/oizys.nimble

diff --git a/flake.nix b/flake.nix
index 60b776e..dd2a35a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,5 +1,5 @@
 {
-  description = "daylinmorgan-nixcfg";
+  description = "nix begat oizys";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
@@ -35,10 +35,10 @@
     ...
   }: let
     lib = import ./lib {inherit inputs nixpkgs;};
-    inherit (lib) findModules mapHosts buildStyx;
+    inherit (lib) findModules mapHosts buildOizys;
   in {
     nixosModules = findModules ./modules;
     nixosConfigurations = mapHosts ./hosts;
-    packages = buildStyx {};
+    packages = buildOizys {};
   };
 }
diff --git a/lib/default.nix b/lib/default.nix
index 057cc98..49efcc2 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -11,12 +11,12 @@
 in rec {
   forAllSystems = f: genAttrs supportedSystems (system: f nixpkgs.legacyPackages.${system});
 
-  buildStyx = _:
+  buildOizys = _:
     forAllSystems (
       pkgs: let
-        pkg = pkgs.callPackage ../styx {};
+        pkg = pkgs.callPackage ../oizys {};
       in {
-        styx = pkg;
+        oizys = pkg;
         default = pkg;
       }
     );
diff --git a/modules/nix.nix b/modules/nix.nix
index 84c5105..03152f8 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -19,7 +19,7 @@
   environment.systemPackages = with pkgs; [
     nix-output-monitor
     alejandra
-    inputs.self.packages.${pkgs.system}.styx
+    inputs.self.packages.${pkgs.system}.oizys
   ];
 
   nix.settings = {
diff --git a/oizys/default.nix b/oizys/default.nix
new file mode 100644
index 0000000..bcf7680
--- /dev/null
+++ b/oizys/default.nix
@@ -0,0 +1,9 @@
+{
+  lib,
+  buildNimPackage,
+}:
+buildNimPackage (final: prev: {
+  pname = "oizys";
+  version = "unstable";
+  src = ./.;
+})
diff --git a/oizys/oizys.nim b/oizys/oizys.nim
new file mode 100644
index 0000000..daa888c
--- /dev/null
+++ b/oizys/oizys.nim
@@ -0,0 +1,127 @@
+import std/[logging, os, osproc, tables, times]
+from std/nativesockets import getHostname
+
+
+var logger = newConsoleLogger()
+addHandler(logger)
+let summaryFile = getEnv("GITHUB_STEP_SUMMARY")
+
+type
+  StyxContext = object
+    flake, host: string
+    cache = "daylin"
+    nom: bool = true
+
+proc newCtx(): StyxContext =
+  result = StyxContext()
+  result.flake = getEnv("FLAKE_PATH", getEnv("HOME") / "nixcfg")
+  result.host = getHostname()
+
+proc systemFlakePath(c: StyxContext): string =
+  c.flake & "#nixosConfigurations." & c.host & ".config.system.build.toplevel"
+
+proc execQuit(cmd: string) =
+  quit (execCmd cmd)
+
+proc build(c: StyxContext) =
+  ## build nixos
+  let
+    cmd = if c.nom: "nom" else: "nix"
+  execQuit cmd & " build " & c.systemFlakePath
+
+proc dry(c: StyxContext) =
+  ## poor man's nix flake check
+  execQuit "nix build " & c.systemFlakePath & " --dry-run"
+
+proc cache(c: StyxContext) =
+  # Simple benchmarking
+  let start = cpuTime()
+  let code = execCmd """
+    cachix watch-exec """ & c.cache & """ \
+        -- \
+        nix build """ & c.systemFlakePath & """ \
+        --print-build-logs \
+        --accept-flake-config
+    """
+  let duration = (cpuTime() - start)
+  if code != 0:
+    error "faile to build configuration for: ", c.host
+
+  if summaryFile != "":
+    writeFile(
+      summaryFile,
+      "Built host: " & c.host & " in " & $duration & " seconds"
+    )
+  info "Built host: " & c.host & " in " & $duration & " seconds"
+
+
+proc nixosRebuild(c: StyxContext, cmd: string) =
+  execQuit "sudo nixos-rebuild " & cmd & " " & " --flake " & c.flake
+
+proc boot(c: StyxContext) =
+  ## nixos rebuild boot
+  nixosRebuild c, "build"
+
+proc switch(c: StyxContext) =
+  ## nixos rebuild switch
+  nixosRebuild c, "switch"
+
+const usage = """
+oizys <cmd> [opts]
+  commands:
+    dry     poor man's nix flake check
+    boot    nixos-rebuild boot
+    switch  nixos-rebuild switch
+    cache   build and push to cachix
+    build   build system flake
+
+  options:
+    --help  > show this help
+    -h|--host  > hostname (current host)
+    -f|--flake > path to flake ($FLAKE_PATH or $HOME/styx)
+    -c|--cache > name of cachix binary cache (daylin)
+"""
+
+proc runCmd(c: StyxContext, cmd: string) =
+  case cmd:
+    of "dry": dry c
+    of "switch": switch c
+    of "boot": boot c
+    of "cache": cache c
+    of "build": build c
+    else:
+      error "unknown command: ", cmd
+      echo usage
+      quit 1
+
+
+proc parseFlag(c: var StyxContext, key, val: string) = 
+  case key:
+    of "help":
+      echo usage; quit 0
+    of "h","host":
+      c.host = val
+    of "f","flake":
+      c.flake = val
+    of "no-nom":
+      c.nom = false
+
+when isMainModule:
+  import std/parseopt
+  var
+    c = newCtx()
+    cmd: string
+  for kind, key, val in getopt():
+    case kind
+    of cmdArgument:
+      cmd = key
+    of cmdLongOption, cmdShortOption:
+      parseFlag c, key, val
+    of cmdEnd:
+      discard
+  if cmd == "":
+    echo "please specify a command"
+    echo usage; quit 1
+
+  info $c
+  runCmd c, cmd
diff --git a/oizys/oizys.nimble b/oizys/oizys.nimble
new file mode 100644
index 0000000..1e1d304
--- /dev/null
+++ b/oizys/oizys.nimble
@@ -0,0 +1,13 @@
+# Package
+
+author        = "Daylin Morgan"
+version       = "0.1.0"
+description   = "oizys"
+license       = "MIT"
+srcDir        = "."
+bin           = @["oizys"]
+
+
+# Dependencies
+
+requires "nim >= 2.0.0"