default.nix for pandoc

Author: jamesdbrock

.gitignore

@@ -0,0 +1 @@
+result

README.md

@@ -11,3 +11,11 @@ http://cross-magazine.sub.jp/magazine/
 Code: https://github.com/xc-jp/blog-post-code
 
 All content is copyright Cross Compass LLC 2021.
+
+## Building
+
+To locally `pandoc` all of the `*.md` files into `result/*.html` files,
+
+```
+nix-build
+```

default.nix

@@ -0,0 +1,18 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.stdenv.mkDerivation {
+  name = "xc-blog-posts";
+  src = builtins.path { path = ./.; name = "blog-posts"; }; # https://nix.dev/anti-patterns/language.html#reproducability-referencing-top-level-directory-with
+  nativeBuildInputs = [pkgs.pandoc];
+  phases = "unpackPhase installPhase";
+  unpackPhase = ''
+    cp $src/*.md ./
+  '';
+  installPhase = ''
+    mkdir -p $out
+    for file in *.md; do
+      pandoc $file --from markdown --to html --standalone --output "$out/''${file%%.md}.html"
+    done
+  '';
+}
+