switch from conda to nix for tooling

compiler/verify/run_script.py

@@ -29,26 +29,21 @@ def run_script(cell_name, script="lvs"):
 
     scriptpath = '{0}run_{1}.sh'.format(OPTS.openram_temp, script)
 
-    # Wrap with conda activate & conda deactivate
-    if OPTS.use_conda:
-        from openram import CONDA_HOME
-        with open(scriptpath, "r") as f:
-            script_content = f.readlines()
-        with open(scriptpath, "w") as f:
-            # First line is shebang
-            f.write(script_content[0])
-            # Activate conda using the activate script
-            f.write("source {}/bin/activate\n".format(CONDA_HOME))
-            for line in script_content[1:]:
-                f.write(line)
-            # Deactivate conda at the end
-            f.write("conda deactivate\n")
-
     debug.info(2, "Starting {}".format(scriptpath))
     start = time.time()
     with open(outfile, 'wb') as fo, open(errfile, 'wb') as fe:
+        if OPTS.use_nix:
+            p_cmd = [
+                "nix",
+                "--extra-experimental-features", "nix-command flakes",
+                "develop",
+                "--command",
+                scriptpath,
+            ]
+        else:
+            p_cmd = [scriptpath]
         p = subprocess.Popen(
-                [scriptpath], stdout=fo, stderr=fe, cwd=OPTS.openram_temp)
+                p_cmd, stdout=fo, stderr=fe, cwd=OPTS.openram_temp)
 
         if echo_cmd_output:
             tailo = subprocess.Popen([