diff options
| -rw-r--r-- | users/Profpatsch/execline/default.nix | 21 | ||||
| -rw-r--r-- | users/Profpatsch/netstring/default.nix | 3 | ||||
| -rw-r--r-- | users/Profpatsch/nix-home/default.nix | 91 |
3 files changed, 115 insertions, 0 deletions
diff --git a/users/Profpatsch/execline/default.nix b/users/Profpatsch/execline/default.nix index 1f75b97591fc..c6a8d284a634 100644 --- a/users/Profpatsch/execline/default.nix +++ b/users/Profpatsch/execline/default.nix @@ -5,8 +5,29 @@ let name = "exec-helpers"; } (builtins.readFile ./exec_helpers.rs); + print-one-env = depot.nix.writers.rustSimple { + name = "print-one-env"; + dependencies = [ + depot.users.Profpatsch.execline.exec-helpers + ]; + } '' + extern crate exec_helpers; + use std::os::unix::ffi::OsStrExt; + use std::io::Write; + + fn main() { + let args = exec_helpers::args("print-one-env", 1); + let valname = std::ffi::OsStr::from_bytes(&args[0]); + match std::env::var_os(&valname) { + None => exec_helpers::die_user_error("print-one-env", format!("Env variable `{:?}` is not set", valname)), + Some(val) => std::io::stdout().write_all(&val.as_bytes()).unwrap() + } + } + ''; + in depot.nix.readTree.drvTargets { inherit exec-helpers + print-one-env ; } diff --git a/users/Profpatsch/netstring/default.nix b/users/Profpatsch/netstring/default.nix index dcc29d7e6fec..b4990cae6766 100644 --- a/users/Profpatsch/netstring/default.nix +++ b/users/Profpatsch/netstring/default.nix @@ -57,6 +57,9 @@ let in depot.nix.readTree.drvTargets { inherit + toNetstring + toNetstringList + toNetstringKeyVal python-netstring rust-netstring ; diff --git a/users/Profpatsch/nix-home/default.nix b/users/Profpatsch/nix-home/default.nix new file mode 100644 index 000000000000..2b44868f5a19 --- /dev/null +++ b/users/Profpatsch/nix-home/default.nix @@ -0,0 +1,91 @@ +{ depot, pkgs, lib, ... }: + +let + bins = depot.nix.getBins pkgs.stow [ "stow" ] + // depot.nix.getBins pkgs.coreutils [ "mkdir" "ln" "printenv" "rm" ] + // depot.nix.getBins pkgs.xe [ "xe" ] + // depot.nix.getBins pkgs.lr [ "lr" ] + ; + + # run stow to populate the target directory with the given stow package, read from stowDir. + # Bear in mind that `stowDirOriginPath` should always be semantically bound to the given `stowDir`, otherwise stow might become rather confused. + runStow = { + # “stow package” to stow (see manpage) + stowPackage, + # “target directory” to stow in (see manpage) + targetDir, + # The “stow directory” (see manpage), containing “stow packages” (see manpage) + stowDir, + # representative directory for the stowDir in the file system, against which stow will create relative links. + # ATTN: this is always overwritten with the contents of `stowDir`! You shouldn’t re-use the same `stowDirOriginPath` for different `stowDir`s, otherwise there might be surprises. + stowDirOriginPath, + }: depot.nix.writeExecline "stow-${stowPackage}" {} [ + # first, create a temporary stow directory to use as source + # (stow will use it to determine the origin of files) + "if" [ bins.mkdir "-p" stowDirOriginPath ] + # remove old symlinks + "if" [ + "pipeline" [ + bins.lr "-0" "-t" "depth == 1 && type == l" stowDirOriginPath + ] + bins.xe "-0" bins.rm + ] + # populate with new stow targets + "if" [ + "elglob" "-w0" "stowPackages" "${stowDir}/*" + bins.ln "--force" "-st" stowDirOriginPath "$stowPackages" + ] + # stow always looks for $HOME/.stowrc to read more arguments + "export" "HOME" "/homeless-shelter" + bins.stow + # always run restow for now; this does more stat but will remove stale links + "--restow" + "--dir" stowDirOriginPath + "--target" targetDir + stowPackage + ]; + + # create a stow dir from a list of drv paths and a stow package name. + makeStowDir = + (with depot.nix.yants; + defun + [ (list (struct { + originalDir = drv; + stowPackage = string; + })) + drv + ] ) + (dirs: + depot.nix.runExecline "make-stow-dir" { + stdin = lib.pipe dirs [ + (map depot.users.Profpatsch.netencode.gen.dwim) + depot.users.Profpatsch.netstring.toNetstringList + ]; + } [ + "importas" "out" "out" + "if" [ bins.mkdir "-p" "$out" ] + "forstdin" "-d" "" "-o" "0" "line" + "pipeline" [ + depot.users.Profpatsch.execline.print-one-env "line" + ] + depot.users.Profpatsch.netencode.record-splice-env + "importas" "-ui" "originalDir" "originalDir" + "importas" "-ui" "stowPackage" "stowPackage" + bins.ln "-sT" "$originalDir" "\${out}/\${stowPackage}" + ]); + +in + +# TODO: temp +lib.pipe {} [ + (_: makeStowDir [{ + stowPackage = "hello"; + originalDir = pkgs.hello; + }]) + (d: runStow { + stowDir = d; + stowPackage = "hello"; + targetDir = "/home/philip/tmp"; + stowDirOriginPath = "/home/philip/tmp/stowOrigin"; + }) +] |