concurrency fix.

deployments/ci.nix

@@ -142,7 +142,7 @@ in
 
       i18n.defaultLocale = "en_US.UTF-8";
       nix.useSandbox = true;
-      nix.maxJobs = 5;
+      nix.maxJobs = 1;
       nix.nrBuildUsers = 30;
       nix.trustedUsers=["root" "fre" ];
 

deployments/gitlab-runner.nix

@@ -98,7 +98,7 @@ in
             --request-concurrency ${cfg.concurrency} \
             --tag-list "integration,notknl,singularity"\
           ''
-          "${pkgs.gnused}/bin/sed -i 's/concurrent = 1/concurrent = ${cfg.concurrency}/' /etc/gitlab-runner/config.toml"];
+          "${pkgs.gnused}/bin/sed -i 's/concurrent = .*$/concurrent = ${cfg.concurrency}/' /etc/gitlab-runner/config.toml"];
           ExecStart = ''
             ${cfg.package.bin}/bin/gitlab-runner run \
             --working-directory ${cfg.workDir} \