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author | lassulus <lass@aidsballs.de> | 2015-09-05 12:17:59 +0200 |
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committer | lassulus <lass@aidsballs.de> | 2015-09-05 12:17:59 +0200 |
commit | f54a0a9ea7fd5a9902a5b38786da42f06d615b5a (patch) | |
tree | d7c475b212d8acc35a5dc7d20ec1f2228c664010 /krebs/5pkgs/genid | |
parent | f3c1727659c59ff638b1adead8e30ee2f79f39de (diff) | |
parent | d6d9956abc60548c755d30e6a5bd13c10abbb181 (diff) |
Merge branch 'makefu'
Diffstat (limited to 'krebs/5pkgs/genid')
-rw-r--r-- | krebs/5pkgs/genid/default.nix | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/krebs/5pkgs/genid/default.nix b/krebs/5pkgs/genid/default.nix new file mode 100644 index 00000000..c75bec31 --- /dev/null +++ b/krebs/5pkgs/genid/default.nix @@ -0,0 +1,22 @@ +{ lib, pkgs, ... }: + +pkgs.writeScriptBin "genid" '' + #! /bin/sh + # usage: genid NAME + set -euf + + export PATH=${lib.makeSearchPath "bin" (with pkgs; [ + bc + coreutils + ])} + + name=$1 + hash=$(printf %s "$name" | sha1sum | cut -d\ -f1 | tr a-f A-F) + echo " + min=2^24 # bigger than nobody and nogroup, see <nixos/modules/misc/ids.nix> + # and some spare for stuff like lxd. + max=2^32 # see 2^(8*sizeof(uid_t)) + ibase=16 + ($hash + min) % max + " | bc +'' |