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-rw-r--r--krebs/4lib/default.nix7
-rw-r--r--krebs/4lib/shell.nix22
-rw-r--r--krebs/5pkgs/default.nix32
-rw-r--r--krebs/5pkgs/nq.nix16
4 files changed, 75 insertions, 2 deletions
diff --git a/krebs/4lib/default.nix b/krebs/4lib/default.nix
index b67585335..ca7219c7e 100644
--- a/krebs/4lib/default.nix
+++ b/krebs/4lib/default.nix
@@ -14,5 +14,12 @@ builtins // lib // rec {
dns = import ./dns.nix { inherit lib; };
listset = import ./listset.nix { inherit lib; };
+ shell = import ./shell.nix { inherit lib; };
tree = import ./tree.nix { inherit lib; };
+
+ toC = x: {
+ list = "{ ${concatStringsSep ", " (map toC x)} }";
+ null = "NULL";
+ string = toJSON x; # close enough
+ }.${typeOf x};
}
diff --git a/krebs/4lib/shell.nix b/krebs/4lib/shell.nix
new file mode 100644
index 000000000..2a6da5c16
--- /dev/null
+++ b/krebs/4lib/shell.nix
@@ -0,0 +1,22 @@
+{ lib, ... }:
+
+with builtins;
+with lib;
+
+rec {
+ escape =
+ let
+ isSafeChar = c: match "[-./0-9_a-zA-Z]" c != null;
+ in
+ stringAsChars (c:
+ if isSafeChar c then c
+ else if c == "\n" then "'\n'"
+ else "\\${c}");
+
+ #
+ # shell script generators
+ #
+
+ # example: "${cat (toJSON { foo = "bar"; })} | jq -r .foo"
+ cat = s: "printf '%s' ${escape s}";
+}
diff --git a/krebs/5pkgs/default.nix b/krebs/5pkgs/default.nix
index 062f0a515..3658c43e0 100644
--- a/krebs/5pkgs/default.nix
+++ b/krebs/5pkgs/default.nix
@@ -1,17 +1,45 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
+
+with import ../4lib { inherit lib; };
let
inherit (pkgs) callPackage;
in
pkgs //
-{
+rec {
cac = callPackage ./cac.nix {};
dic = callPackage ./dic.nix {};
genid = callPackage ./genid.nix {};
github-hosts-sync = callPackage ./github-hosts-sync.nix {};
github-known_hosts = callPackage ./github-known_hosts.nix {};
hashPassword = callPackage ./hashPassword.nix {};
+ nq = callPackage ./nq.nix {};
posix-array = callPackage ./posix-array.nix {};
youtube-tools = callPackage ./youtube-tools.nix {};
+
+ execve = name: { filename, argv, envp }:
+ writeC name {} ''
+ #include <unistd.h>
+ int main () {
+ const char *filename = ${toC filename};
+ char *const argv[] = ${toC (argv ++ [null])};
+ char *const envp[] = ${toC (
+ mapAttrsToList (k: v: "${k}=${v}") envp ++ [null]
+ )};
+ execve(filename, argv, envp);
+ return -1;
+ }
+ '';
+
+ writeC = name: {}: src: pkgs.runCommand name {} ''
+ PATH=${lib.makeSearchPath "bin" (with pkgs; [
+ binutils
+ coreutils
+ gcc
+ ])}
+ in=${pkgs.writeText "${name}.c" src}
+ gcc -O -Wall -o $out $in
+ strip --strip-unneeded $out
+ '';
}
diff --git a/krebs/5pkgs/nq.nix b/krebs/5pkgs/nq.nix
new file mode 100644
index 000000000..0f397a43c
--- /dev/null
+++ b/krebs/5pkgs/nq.nix
@@ -0,0 +1,16 @@
+{ fetchgit, stdenv }:
+
+stdenv.mkDerivation rec {
+ name = "nq-${rev}";
+ rev = "0eae839cb1";
+
+ src = fetchgit {
+ url = https://github.com/chneukirchen/nq;
+ inherit rev;
+ sha256 = "1150274750cde934932d65bd6053d7a0ba2404a59eadfb87fc6bd8a4fb70febb";
+ };
+
+ configurePhase = ''
+ sed -i "s:^PREFIX=.*:PREFIX=$out:" Makefile
+ '';
+}