4 files changed, 131 insertions, 0 deletions
diff --git a/src/content/pastebins/2018/07/13/guix-nixos-systemd.adoc b/src/content/pastebins/2018/07/13/guix-nixos-systemd.adoc
new file mode 100644
index 0000000..c2b8b62
--- /dev/null
+++ b/src/content/pastebins/2018/07/13/guix-nixos-systemd.adoc
@@ -0,0 +1,33 @@
+---
+
+title: GNU Guix systemd daemon for NixOS
+
+date: 2018-07-13
+
+layout: post
+
+lang: en
+
+eu_categories: nix,guix
+
+ref: gnu-guix-systemd-daemon-for-nixos
+
+---
+
+```nix
+  # Derived from Guix guix-daemon.service.in
+  # https://git.savannah.gnu.org/cgit/guix.git/tree/etc/guix-daemon.service.in?id=00c86a888488b16ce30634d3a3a9d871ed6734a2
+  systemd.services.guix-daemon = {
+    enable = true;
+    description = "Build daemon for GNU Guix";
+    serviceConfig = {
+      ExecStart = "/var/guix/profiles/per-user/root/guix-profile/bin/guix-daemon --build-users-group=guixbuild";
+      Environment="GUIX_LOCPATH=/root/.guix-profile/lib/locale";
+      RemainAfterExit="yes";
+      StandardOutput="syslog";
+      StandardError="syslog";
+      TaskMax= 8192;
+    };
+    wantedBy = [ "multi-user.target" ];
+  };
+```
diff --git a/src/content/pastebins/2018/07/13/guixbuilder-nixos.adoc b/src/content/pastebins/2018/07/13/guixbuilder-nixos.adoc
new file mode 100644
index 0000000..880d347
--- /dev/null
+++ b/src/content/pastebins/2018/07/13/guixbuilder-nixos.adoc
@@ -0,0 +1,53 @@
+---
+
+title: Guix users in NixOS system configuration
+
+date: 2018-07-13
+
+layout: post
+
+lang: en
+
+eu_categories: nix,guix
+
+ref: guix-users-in-nixos-system-configuration
+
+---
+
+```nix
+  users = {
+    mutableUsers = false;
+
+    extraUsers =
+      let
+        andrehUser =  {
+          andreh = {
+            # my custom user config
+          };
+        };
+        # From the Guix manual:
+        # https://www.gnu.org/software/guix/manual/en/html_node/Build-Environment-Setup.html#Build-Environment-Setup
+        buildUser = (i:
+          {
+            "guixbuilder${i}" = {                   # guixbuilder$i
+              group = "guixbuild";                  # -g guixbuild
+              extraGroups = ["guixbuild"];          # -G guixbuild
+              home = "/var/empty";                  # -d /var/empty
+              shell = pkgs.nologin;                 # -s `which nologin`
+              description = "Guix build user ${i}"; # -c "Guix buid user $i"
+              isSystemUser = true;                  # --system
+            };
+          }
+        );
+      in
+        # merge all users
+        pkgs.lib.fold (str: acc: acc // buildUser str)
+                      andrehUser
+                      # for i in `seq -w 1 10`
+                      (map (pkgs.lib.fixedWidthNumber 2) (builtins.genList (n: n+1) 10));
+
+    extraGroups.guixbuild = {
+      name = "guixbuild";
+    };
+  };
+```
diff --git a/src/content/pastebins/2018/07/13/guixbuilder.adoc b/src/content/pastebins/2018/07/13/guixbuilder.adoc
new file mode 100644
index 0000000..82204a8
--- /dev/null
+++ b/src/content/pastebins/2018/07/13/guixbuilder.adoc
@@ -0,0 +1,26 @@
+---
+
+title: Guix builder user creation commands
+
+date: 2018-07-13
+
+layout: post
+
+lang: en
+
+eu_categories: guix
+
+ref: guix-builder-user-creation-commands
+
+---
+
+```shell
+groupadd --system guixbuild
+for i in `seq -w 1 10`;
+do
+    useradd -g guixbuild -G guixbuild           \
+            -d /var/empty -s `which nologin`    \
+            -c "Guix build user $i" --system    \
+            guixbuilder$i;
+done
+```
diff --git a/src/content/pastebins/2018/07/13/nix-strpad.adoc b/src/content/pastebins/2018/07/13/nix-strpad.adoc
new file mode 100644
index 0000000..359bda5
--- /dev/null
+++ b/src/content/pastebins/2018/07/13/nix-strpad.adoc
@@ -0,0 +1,19 @@
+---
+
+title: Nix string padding
+
+date: 2018-07-13
+
+layout: post
+
+lang: en
+
+eu_categories: nix
+
+ref: nix-string-padding
+
+---
+
+```nix
+padString = (n: if n < 10 then "0" + toString n else toString n)
+```