Add asciinema support

content/posts/nix-evaluation-blocking/a.nix

@@ -0,0 +1,22 @@
+let
+  pkgs = import <nixpkgs> { };
+  wait = n: builtins.readFile (pkgs.runCommand "delay" { } ''
+    sleep ${toString n}
+
+    echo $((${toString n} * 5)) > $out
+  '');
+
+in
+pkgs.stdenv.mkDerivation {
+  name = "blah";
+  dontUnpack = true;
+  doInstall = false;
+  dontConfigure = true;
+  buildPhase = ''
+    echo ${wait 1}
+    echo ${wait 2}
+    echo ${wait 3}
+    touch $out
+  '';
+  doBuild = true;
+}

content/posts/nix-evaluation-blocking/build-oops.cast

@@ -0,0 +1,182 @@
+{"version": 2, "width": 100, "height": 15, "timestamp": 1680475860, "env": {"SHELL": "/nix/store/k4j76vg58c6j90s8l46kx3843vysx732-bash-interactive-5.2-p15/bin/bash", "TERM": "xterm-256color"}}
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+[0.482229, "o", " "]
+[0.618363, "o", "b"]
+[0.682158, "o", "u"]
+[0.706821, "o", "i"]
+[0.770157, "o", "l"]
+[0.790173, "o", "d"]
+[0.882109, "o", " "]
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+[1.794143, "o", "L"]
+[1.858116, "o", " "]
+[2.074151, "o", "-"]
+[2.146093, "o", "f"]
+[2.234079, "o", " "]
+[2.538128, "o", "a"]
+[2.602026, "o", "."]
+[2.818097, "o", "n"]
+[2.842013, "o", "i"]
+[2.906005, "o", "x"]
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+[5.938219, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[6.038405, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[6.088499, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[6.188679, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[6.288866, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[6.489343, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[6.539461, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[6.58959, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[6.639697, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m1\u001b[0m/2 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[7.691627, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
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+[7.79182, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[7.84189, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[7.891987, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[7.942065, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[7.992151, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.042235, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.092366, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.14247, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.192555, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.242642, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.292734, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.342821, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.392923, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.443013, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.493115, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.543205, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.593302, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.643395, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.693484, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.74357, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.793693, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.843754, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.893853, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.943945, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[8.994038, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.044121, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.09423, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.144326, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.194413, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.244484, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.29459, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.344686, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.394777, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.444909, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.495009, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.545113, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.595202, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.645305, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.695422, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.745501, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.795613, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.845725, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m2\u001b[0m/3 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mdelay\u001b[0m\u001b[0m\u001b[K"]
+[9.895792, "o", "\r[\u001b[32;1m3\u001b[0m built, \u001b[32;1m0.0\u001b[0m MiB DL] \u001b[0m\u001b[K"]
+[9.949954, "o", "\r[\u001b[32;1m3\u001b[0m built, \u001b[32;1m0.0\u001b[0m MiB DL] querying \u001b[1mblah\u001b[0m on https://cache.nixos.org\u001b[0m\u001b[K"]
+[10.000028, "o", "\r[\u001b[32;1m3\u001b[0m built, \u001b[32;1m0.0\u001b[0m MiB DL] querying \u001b[1mblah\u001b[0m on https://cache.nixos.org\u001b[0m\u001b[K"]
+[10.050112, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m\u001b[0m\u001b[K"]
+[10.065662, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mpatching sources\u001b[0m\r\n"]
+[10.065722, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (patchPhase)\u001b[0m\u001b[K"]
+[10.068482, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mbuilding\u001b[0m\r\n"]
+[10.06852, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (buildPhase)\u001b[0m\u001b[K"]
+[10.069812, "o", "\r\u001b[K\u001b[2mblah> \u001b[0m5\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (buildPhase)\u001b[0m\u001b[K\r\u001b[K\u001b[2mblah> \u001b[0m10\u001b[0m\r\n"]
+[10.069832, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (buildPhase)\u001b[0m\u001b[K\r\u001b[K\u001b[2mblah> \u001b[0m15\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (buildPhase)\u001b[0m\u001b[K"]
+[10.072393, "o", "\r\u001b[K\u001b[2mblah> \u001b[0minstalling\u001b[0m\r\n"]
+[10.072428, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (installPhase)\u001b[0m\u001b[K"]
+[10.073934, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mno Makefile or custom installPhase, doing nothing\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (installPhase)\u001b[0m\u001b[K"]
+[10.075025, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mpost-installation fixup\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (fixupPhase)\u001b[0m\u001b[K"]
+[10.080837, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mshrinking RPATHs of ELF executables and libraries in /nix/store/4g3dr2qinylfdz0m0afnsfkh74kmcfdm-blah\u001b[0m\r\n"]
+[10.080849, "o", "\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (fixupPhase)\u001b[0m\u001b[K"]
+[10.081909, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mchecking for references to /build/ in /nix/store/4g3dr2qinylfdz0m0afnsfkh74kmcfdm-blah...\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (fixupPhase)\u001b[0m\u001b[K"]
+[10.083149, "o", "\r\u001b[K\u001b[2mblah> \u001b[0mpatching script interpreter paths in /nix/store/4g3dr2qinylfdz0m0afnsfkh74kmcfdm-blah\u001b[0m\r\n\r[\u001b[34;1m1\u001b[0m/\u001b[32;1m3\u001b[0m/4 built, \u001b[32;1m0.0\u001b[0m MiB DL] building \u001b[1mblah\u001b[0m (fixupPhase)\u001b[0m\u001b[K"]
+[10.095936, "o", "\r\u001b[K"]
+[10.098692, "o", "\u001b[?2004h$ "]
+[13.114171, "o", "\u001b[?2004l\r\r\n"]
+[13.11422, "o", "exit\r\n"]

content/posts/nix-evaluation-blocking/index.md

@@ -1,9 +1,12 @@
 +++
-date = "2023-03-30"
+date = "2023-04-02"
-draft = true
+draft = false
 path = "/blog/nix-evaluation-blocking"
 tags = ["haskell", "nix"]
 title = "Stopping evaluation from blocking in Nix"
+
+[extra]
+use_asciinema = true
 +++
 
 Nix has a feature called "import from derivation", which is sometimes called
@@ -93,6 +96,31 @@ nixpkgs:
   * `builtins.fetchurl`
   * etc
 
+Here is what it looks like for a build to block on import-from-derivation on
+the new-style `nix build` command. The sign that it's doing an IFD is that it's
+building one thing at a time, it may or may not be punctuated by an occasional
+empty line (while running evaluation), and the last number in "1/2/3 built"
+keeps going up.
+
+{{ asciinema(path="build-oops.cast", colocated=true, preload=true) }}
+
+This is a much less clear sign than the old `nix-build` CLI,
+which would print "building '/nix/store/...'" for several lines before the
+typical "this derivation will be built" obtained when evaluation is done:
+
+```
+building '/nix/store/c11sidylvwss1xn2b159imk2li6flphq-delay.drv'...
+building '/nix/store/2g0rglrimm2p4j4gj7j3n4mlgqfghqic-delay.drv'...
+building '/nix/store/ywppgzc698pb979rwmavnmn9wf3hzvcb-delay.drv'...
+this derivation will be built:
+  /nix/store/n47ad95nmq16442vyl2d8w2knpp3ngws-blah.drv
+```
+
+Here's the Nix code I used to create these demos. It's using IFD because of the
+`builtins.readFile` on a derivation.
+
+{{ codefile(path="a.nix", colocated=true, code_lang='nix') }}
+
 #### Builtin fetchers
 
 Use of builtin fetchers is a surprisingly common problem of blocking in

templates/macros/asciinema.html

@@ -0,0 +1,30 @@
+{%- import "macros/colocated_asset.html" as colocated_asset -%}
+
+{# Load an asciinema file and insert it into the page #}
+{%- macro asciinema(path, colocated=false, preload=false) -%}
+{%- set name = path | replace(from='.', to='-') | replace(from='/', to='-') -%}
+{%- if not page.extra.use_asciinema -%}
+    {{ throw(message='Please set extra.use_asciinema in page front-matter') }}
+{%- endif -%}
+
+{%- if colocated == true -%}
+    {%- set path = colocated_asset::colocated_asset(path=path, get_url=true) | trim -%}
+{%- endif -%}
+
+<div id="asciinema-{{ name }}"></div>
+<script>
+(() => {
+    const script = document.getElementById('asciinema-player')
+    const el = document.getElementById('asciinema-{{ name }}')
+    const go = () => {
+        AsciinemaPlayer.create('{{ path | safe }}', el, {preload: {{ preload }} })
+    }
+    // the script could have already loaded
+    if (window.AsciinemaPlayer != null) {
+        go()
+    } else {
+        script.addEventListener('load', go)
+    }
+})()
+</script>
+{%- endmacro asciinema -%}

templates/macros/colocated_asset.html

@@ -1,10 +1,16 @@
-<!--
+{#
-       Returns the file path of the colocated asset.
+Returns the file path of the colocated asset.
-       When Zola uses `resize_image` it looks relative to the `content` folder.
+When Zola uses `resize_image` it looks relative to the `content` folder.
-       This means you have to reference the full page asset colocation path.
+This means you have to reference the full page asset colocation path.
--->
+
-{%- macro colocated_asset(path) -%}
+The get_url parameter specifies whether you want the URL or the file path.
-       {%- set page_url_components = page.relative_path | default(value=section.relative_path) | split(pat='/') -%}
+#}
-       {%- set page_base = page_url_components | slice(end=page_url_components | length - 1) | join(sep='/') -%}
+{%- macro colocated_asset(path, get_url=false) -%}
-       {{ page_base ~ '/' ~ path }}
+{%- if get_url -%}
+    {{ page.path ~ path }}
+{%- else -%}
+    {%- set page_url_components = page.relative_path | default(value=section.relative_path) | split(pat='/') -%}
+    {%- set page_base = page_url_components | slice(end=page_url_components | length - 1) | join(sep='/') -%}
+    {{ page_base ~ '/' ~ path }}
+{%- endif -%}
 {%- endmacro colocated_asset -%}

templates/page.html

@@ -13,6 +13,11 @@
 <meta property="og:description" content="{{ config.description }}" />
 {% endif %}
 
+{% if page.extra.use_asciinema %}
+<script id="asciinema-player" defer type="text/javascript" src="{{ get_url(path='js/asciinema-player.min.js', cachebust=true) | safe }}"></script>
+<link type="text/css" rel="stylesheet" href="{{ get_url(path='css/asciinema-player.css', cachebust=true) | safe }}">
+{% endif %}
+
 {% endblock pagemeta %}
 
 {% block content %}
@@ -32,7 +37,7 @@
 
 {{ page.content | safe }}
 
-{% if config.extra.debug and config.mode == "Serve" %}
+{% if config.extra.debug %}
     <pre><code>{{ __tera_context | escape | safe }}</code></pre>
 {% endif %}
 

templates/shortcodes/asciinema.html

@@ -0,0 +1,7 @@
+{%- import "macros/asciinema.html" as asciinema -%}
+
+{{ asciinema::asciinema(
+    path=path,
+    colocated=colocated | default(value=false),
+    preload=preload | default(value=false)
+) }}