builds/nixos.yml: replace archlinux build

.builds/archlinux.yml

@@ -1,31 +0,0 @@
----
-image: archlinux
-packages:
-  - bmake
-  - dmd
-  - curl
-  - ldc
-  - nix
-sources:
-  - "https://git.sr.ht/~jeremy/esv"
-tasks:
-  - prepare: |
-      printf 'experimental-features = nix-command flakes\n' \
-        | sudo tee -a /etc/nix/nix.conf
-      sudo systemctl start nix-daemon
-      sudo usermod -aG nix-users build
-  - build-dmd: |
-      cd esv
-      ./configure -c dmd
-      bmake all clean
-  - build-ldc: |
-      cd esv
-      ./configure -c ldc2
-      bmake
-  - install: |
-      sudo bmake -C esv install
-  - test: |
-      # very basic test :)
-      esv Matthew 5-7 >/dev/null
-  - flake: |
-      nix build ./esv

.builds/nixos.yml

@@ -0,0 +1,25 @@
+---
+image: nixos/unstable
+packages:
+ - nixos.dmd
+ - nixos.curl
+ - nixos.gnumake
+ - nixos.ldc
+environment:
+  NIX_CONFIG: "experimental-features = nix-command flakes"
+sources:
+  - "https://git.sr.ht/~jeremy/esv"
+tasks:
+  - build-dmd: |
+      cd esv
+      ./configure -c dmd
+      make all clean
+  - build-ldc: |
+      cd esv
+      ./configure -c ldc2
+      make
+  - install: |
+      nix profile install ./esv
+  - test: |
+      # very basic test :)
+      esv Matthew 5-7 >/dev/null