Add dapper support

Author: whs-dot-hk

.gitignore

@@ -1,3 +1,5 @@
 /target
 
 /result-bin
+
+/bin

Dockerfile.dapper

@@ -0,0 +1,25 @@
+FROM nixos/nix
+
+RUN echo experimental-features = \
+  flakes \
+  nix-command \
+  >> /etc/nix/nix.conf
+
+RUN echo substituters = \
+  https://cache.nixos.org \
+  https://whslabs.cachix.org \
+  >> /etc/nix/nix.conf
+
+RUN echo trusted-public-keys = \
+  cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= \
+  whslabs.cachix.org-1:lIS0YQWf2C+ZsDcUs4CgXScgghEqQ85gOjonfNMg7n0= \
+  >> /etc/nix/nix.conf
+
+ARG CACHIX_AUTH_TOKEN
+
+ENV CACHIX_AUTH_TOKEN $CACHIX_AUTH_TOKEN
+ENV SHELL /bin/sh
+RUN nix-env -iA cachix -f https://cachix.org/api/v1/install
+WORKDIR /source/
+
+ENTRYPOINT ["./dapper.sh"]

Makefile

@@ -0,0 +1,17 @@
+bin/dapper:
+	$(eval t := $(shell mktemp))
+	@curl -Lso $(t) https://releases.rancher.com/dapper/latest/dapper-$$(uname -s)-$$(uname -m)
+	@chmod +x $(t)
+	@mkdir -p bin/
+	@mv $(t) bin/dapper
+
+.DEFAULT_GOAL :=
+
+all: bin/dapper
+	@bin/dapper
+
+s shell: bin/dapper
+	@bin/dapper \
+		-m bind \
+		-s \
+		;

dapper.sh

@@ -0,0 +1,7 @@
+#! /bin/sh
+
+nix-env -i jq
+
+nix build --json \
+  | jq -r '.[].outputs | to_entries[].value' \
+  | cachix push whslabs