refactor(Justfile): Migrate Justfile from nix-blockchain-development

Author: monyarm

Justfile

@@ -0,0 +1,26 @@
+set dotenv-load := true
+
+root-dir := justfile_directory()
+result-dir := root-dir / ".result"
+gc-roots-dir := result-dir / "gc-roots"
+nix := `if tty -s; then echo nom; else echo nix; fi`
+cachix-cache-name := `echo ${CACHIX_CACHE:-}`
+
+os := if os() == "macos" { "darwin" } else { "linux" }
+arch := arch()
+system:= arch + "-" + os
+
+default:
+  @just --list
+
+get-system:
+  @echo {{ system }}
+
+eval-packages eval-system=system:
+  #!/usr/bin/env bash
+  set -euo pipefail
+  source "{{root-dir}}/scripts/nix-eval-jobs.sh"
+  nix_eval_jobs legacyPackages.{{eval-system}}.metacraft-labs
+
+generate-matrix:
+  "{{root-dir}}/scripts/ci-matrix.sh"