pkgs/profpatsch/execline: add el_exec and el_substitute

el_exec: wraps the various execve wrappers in skalib that are useful
for writing execline-like utils. currently only `xpathexec0` is
supported, which execs into the argv you give it or errors with the
right error if file not found.

el_substitute: execline argv substitution! Wraps the execline
function, so it will behave exactly the same as the existing execline
utils, like `importas`.

1 files changed, 24 insertions, 0 deletions

diff --git a/pkgs/profpatsch/rust-deps.nix b/pkgs/profpatsch/rust-deps.nix
new file mode 100644
index 00000000..d6a52258
--- /dev/null
+++ b/pkgs/profpatsch/rust-deps.nix
@@ -0,0 +1,24 @@
+{ buildRustCrate }:
+
+let
+  libc = buildRustCrate {
+    pname = "libc";
+    version = "0.2.69";
+    crateName = "libc";
+    sha256 = "0fwi6rxklsaqcig432fg3cjamiilvv2c4jz0i3dxw7c33ipprhsz";
+  };
+
+  errno = buildRustCrate {
+    pname = "errno";
+    version = "0.2.5";
+    crateName = "errno";
+    sha256 = "0gd36jijlb17df3ffxqxqczlwdawicbbzqjwfjc4b5lzqgizm0bz";
+    dependencies = [ libc ];
+  };
+
+in {
+  inherit
+    libc
+    errno
+    ;
+}