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, 34 insertions, 0 deletions

diff --git a/pkgs/profpatsch/execline/default.nix b/pkgs/profpatsch/execline/default.nix
new file mode 100644
index 00000000..317ca97d
--- /dev/null
+++ b/pkgs/profpatsch/execline/default.nix
@@ -0,0 +1,34 @@
+{ pkgs, writeRustSimpleLib, rust-deps }:
+
+let
+  el-semicolon-common = tests: writeRustSimpleLib "el_semicolon" {
+    buildTests = tests;
+    release = false;
+    verbose = true;
+  } ./el_semicolon.rs;
+
+  el-semicolon-tests = el-semicolon-common true;
+  el-semicolon = el-semicolon-common false;
+
+  el-exec = writeRustSimpleLib "el_exec" {
+    dependencies = [ rust-deps.libc ];
+    buildInputs = [ pkgs.skalibs ];
+    release = false;
+    verbose = true;
+  } ./el_exec.rs;
+
+  el-substitute = writeRustSimpleLib "el_substitute" {
+    dependencies = [ rust-deps.libc rust-deps.errno ];
+    buildInputs = [ pkgs.skalibs ];
+    release = false;
+    verbose = true;
+  } ./el_substitute.rs;
+
+in {
+  inherit
+    el-semicolon
+    el-semicolon-tests
+    el-exec
+    el-substitute
+    ;
+}